add Chinese (Simplified) translation

fastlane/metadata/android/zh-CN/full_description.txt

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+* 轻松创建复杂的锻炼计划
+* 用自定义的持续时间，定义您自己的训练动作
+* 将动作添加到自定义的动作组
+* 文字转语音（TTS）语音提示
+* 使用 Flutter 构建的现代的 Material Design
+* 无广告
+* 自由和开源
+
+Github: https://github.com/blockbasti/just_another_workout_timer

fastlane/metadata/android/zh-CN/short_description.txt

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+您的锻炼的简单计时器，使用 Flutter 构建！

lib/l10n/intl_zh_CN.arb

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+{
+  "@@locale": "zh_CN",
+  "addExercise": "添加动作",
+  "@addExercise": {},
+  "addRest": "添加休息",
+  "@addRest": {},
+  "addSet": "添加组",
+  "@addSet": {},
+  "addWorkout": "添加锻炼",
+  "@addWorkout": {},
+  "announceUpcomingExercise": "宣读即将开始的动作",
+  "@announceUpcomingExercise": {},
+  "AnnounceUpcomingExerciseDesc": "TTS 启用时，宣读即将开始的动作",
+  "@AnnounceUpcomingExerciseDesc": {},
+  "backup": "备份",
+  "@backup": {},
+  "cancel": "取消",
+  "@cancel": {},
+  "countRepetitions": "重复 {count} 次",
+  "@countRepetitions": {},
+  "currentSet": "当前组",
+  "@currentSet": {},
+  "delete": "删除",
+  "@delete": {},
+  "deleteConfirmation": "您想要删除锻炼“{title}”吗？",
+  "@deleteConfirmation": {},
+  "deleteExercise": "删除动作",
+  "@deleteExercise": {},
+  "deleteSet": "删除组",
+  "@deleteSet": {},
+  "deleteWorkout": "删除锻炼",
+  "@deleteWorkout": {},
+  "duplicate": "复制",
+  "@duplicate": {},
+  "durationLeft": "剩余 {timeLeft}，共 {timeTotal}",
+  "@durationLeft": {},
+  "durationWithTime": "持续时间：{formattedTime}",
+  "@durationWithTime": {},
+  "editWorkout": "编辑锻炼",
+  "@editWorkout": {},
+  "enterWorkoutName": "请输入锻炼的名称！",
+  "@enterWorkoutName": {},
+  "exercise": "动作",
+  "@exercise": {},
+  "exerciseOf": "动作 {currentIndex} / {total}",
+  "@exerciseOf": {},
+  "exitCheck": "您确定要退出吗？",
+  "@exitCheck": {},
+  "expanded_setlist": "展开组列表",
+  "@expanded_setlist": {},
+  "expanded_setlist_info": "总是显示完整的组",
+  "@expanded_setlist_info": {},
+  "export": "导出所有锻炼",
+  "@export": {},
+  "firstExercise": "第一个动作：{name}",
+  "@firstExercise": {},
+  "general": "通用",
+  "@general": {},
+  "halfwayDone": "已完成一半",
+  "@halfwayDone": {},
+  "import": "导入备份",
+  "@import": {},
+  "importedCount": "已导入 {count} 个锻炼",
+  "@importedCount": {},
+  "keepScreenAwake": "保持屏幕常亮",
+  "@keepScreenAwake": {},
+  "language": "语言",
+  "@language": {},
+  "licenses": "许可证",
+  "@licenses": {},
+  "moveExerciseDown": "向下移动动作",
+  "@moveExerciseDown": {},
+  "moveExerciseUp": "向上移动动作",
+  "@moveExerciseUp": {},
+  "moveSetDown": "向下移动组",
+  "@moveSetDown": {},
+  "moveSetUp": "向上移动组",
+  "@moveSetUp": {},
+  "name": "名称",
+  "@name": {},
+  "nextExercise": "下一个动作：{name}",
+  "@nextExercise": {},
+  "nextSet": "下一组",
+  "@nextSet": {},
+  "no": "否",
+  "@no": {},
+  "noSound": "不使用音效",
+  "@noSound": {},
+  "noSoundDesc": "静音所有声音输出",
+  "@noSoundDesc": {},
+  "ossLicenses": "开源许可证",
+  "@ossLicenses": {},
+  "overwriteExistingWorkout": "要覆盖已存在的锻炼吗？",
+  "@overwriteExistingWorkout": {},
+  "playTickEverySecond": "每秒播放一次嘀嗒声",
+  "@playTickEverySecond": {},
+  "repetitions": "重复：",
+  "@repetitions": {},
+  "repOf": "重复 {currentIndex} / {total}",
+  "@repOf": {},
+  "reportIssuesOrRequestAFeature": "报告问题或者请求新功能",
+  "@reportIssuesOrRequestAFeature": {},
+  "rest": "休息",
+  "@rest": {},
+  "saved": "已保存",
+  "@saved": {},
+  "saveWorkout": "保存锻炼",
+  "@saveWorkout": {},
+  "seconds": "秒",
+  "@seconds": {},
+  "setIndex": "第 {number} 组",
+  "@setIndex": {},
+  "setOf": "组 {currentIndex} / {total}",
+  "@setOf": {},
+  "settingHalfway": "动作进行到一半时播放声音或进行宣告",
+  "@settingHalfway": {},
+  "settings": "设置",
+  "@settings": {},
+  "soundOutput": "声音输出",
+  "@soundOutput": {},
+  "startWorkout": "开始锻炼",
+  "@startWorkout": {},
+  "title": "Just Another Workout Timer",
+  "@title": {},
+  "tts": "文字转语音（TTS）",
+  "@tts": {},
+  "ttsLang": "TTS 语言",
+  "@ttsLang": {},
+  "ttsLangDesc": "选择一个语言\n（仅当 TTS 启用时）",
+  "@ttsLangDesc": {},
+  "ttsVoice": "TTS 语音（实验性）",
+  "@ttsVoice": {},
+  "ttsVoiceDesc": "选择 TTS 语音",
+  "@ttsVoiceDesc": {},
+  "ttsEngine": "TTS 引擎（实验性）",
+  "ttsEngineDesc": "选择 TTS 引擎",
+  "voice": "语音",
+  "@voice": {},
+  "useSound": "使用音效",
+  "@useSound": {},
+  "useSoundDesc": "使用简单的声音提示动作的开始和结束",
+  "@useSoundDesc": {},
+  "useTTS": "使用文字转语音",
+  "@useTTS": {},
+  "useTTSDesc": "宣读当前动作和即将开始的动作",
+  "@useTTSDesc": {},
+  "viewLicense": "查看许可证",
+  "@viewLicense": {},
+  "viewOnGithub": "在 Github 上查看",
+  "@viewOnGithub": {},
+  "viewOSSLicenses": "查看开源许可证",
+  "@viewOSSLicenses": {},
+  "workoutComplete": "锻炼已完成",
+  "@workoutComplete": {},
+  "workouts": "锻炼",
+  "@workouts": {},
+  "yes": "是",
+  "@yes": {},
+  "yesExit": "是，退出",
+  "@yesExit": {},
+  "theme": "主题",
+  "@theme": {},
+  "theme_dark": "深色",
+  "@theme_dark": {},
+  "theme_light": "浅色",
+  "@theme_light": {},
+  "theme_system": "系统",
+  "@theme_system": {},
+  "shareWorkout": "分享锻炼",
+  "@shareWorkout": {}
+}