expend相关的词根或词缀是: pendpens pendpenspondponder

第三人称单数： expends
过去式： expended
过去分词： expended
现在分词： expending

Bats expend twice as much energy flying through a storm as in clear skies .

蝙蝠要花费在晴天飞行两倍的能量才能飞过暴风雨。

Pick the one you want to really expend that energy on .

将你的精力花在你真正关心的一边。

But many do not expend the extra effort .

但许多人不会去付出这种额外的努力。

Mammals expend huge amounts of energy just keeping warm .

哺乳动物仅为保暖就需要耗费大量能量。

Every effort seemed to expend her spirit 's force .

每一次努力看上去都耗尽了她的精神力量。