take good care of ; preserve well
好好保存 » Well maintained 式中a表示标准正态分布，对上式进行变换，化为检测量b的表达式，可得： » A standard normal distribution, to transform the ty...
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除非你好好保存，真的叶子维持不了多久。
Unless you preserve them, real ones will not last long.
youdao
好好保存此书，直到我回来。
You keep the book until I come back.
一定要好好保存哦。
You must keep it carefully.
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