Which of the following words means to spend time or energy in vain or for nothing?
指花费的时间或者精力没有意义，没有效果的词语是下列的哪一个呢？
"Baibai" is an adverb, meaning to spend time or energy in vain or for nothing.
副词，指花费的时间或者是精力没有意义，没有效果。
Then you would spend time and money on him in vain.
到那时，你为他付出的时间和金钱可能就白白地浪费了。
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