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一、详细释义：
v.
花费；消耗；用光；耗尽 [T]
例句：
Children expend a lot of energy and may need more high-energy food than adults.
孩子们消耗很多能量，可能比成年人需要更多高能量的食物。
例句：
He has expend much time and energy on that experiment.
他已经花费许多时间、金钱在那实验上。
二、词义辨析：
cost,expend,spend,take
这些动词均含“花费”之意。 cost指花费时间、金钱、劳力等。其主语是物，而不能由人充当，也不用被动形式。expend较正式用词，通常指为某一专门目的而花费大量金钱、时间或精力。spend普通用词，与cost基本同义，但主语必须是人。take普通用词，指需要占用空间、时间或精力等，其主语可以是人，也可以是一件事情。
三、参考例句：
He has expend much time and energy on that experiment.
他已经花费许多时间、金钱在那实验上。
At this point, a user will be willing to expend a little effort to learn more.
这时，用户愿意花一些精力来学习。
Don't expend all your energy on such a useless job.
不要把你的精力全花在这无益的工作上。
Dogs expend a lot of energy in running and jumping all over the place.
狗狗们总是到处跑来跑去跳来跳去，显得充满了能量。
Expend energies on aspects of your career that you can genuinely influence.
把精力放在你在事业中真正能够影响到的方面。
Children expend a lot of energy and may need more high-energy food than adults.
孩子们消耗很多能量，可能比成年人需要更多高能量的食物。
At this point, a user will be willing to expend a little effort to learn more.
这时，用户愿意花一些精力来学习。
At this point, a user will be willing to expend a little effort to learn more.
这时，用户愿意花一些精力来学习。
Since the establishment of diplomatic relation, trade between our two countries have is expend to a great extent.
自从我们两国建立外关系以来，我们之间的贸易量已大大增加。
Your social setting can strongly affect what you believe is possible— and that will affect your confidence, the effort you expend, and the results you achieve.
你所处的社交环境会很强烈地影响你的信念—而信念会影响你的自信，你付出的努力，和你获得的成果。
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