Every day, every hour, every minute, every second, they are in a class by themselves! If you don’t catch them, they will never be back, will never exist at all.（这里不能用exist，我不知道你是怎么翻译的。最好换一个词）Write down your everyday experiences. look back time has gone so fast ! It like(这里可以去掉或保留 it ) a（需要用a，前面没有提到train 后面就不能用the） train, （...
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