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Don't waste your precious time; for youth, once spent, will never come again.
光阴勿虚度，青春不再来。
youdao
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They don't come to the office to waste the doctor's time.
他们来办公室不是来浪费医生的时间的。
youdao
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They don't come to the office to waste the doctor's time.
他们来办公室不是来浪费医生的时间的。
youdao