1.Have you ever wondered why children always seem to have bags of energy and never run out of steam?

run out of steam 精疲力竭；失去勢頭

I'm afraid I can't climb to the top, I've run out of steam.
我恐怕爬不到頂了，我已經(jīng)沒力氣了XIG;=c0;c%J[R8.%V.OA。

2.Researchers have discovered that children have the stamina and levels of recovery of endurance athletes.

stamina 精力；毅力

You have to have a lot of stamina to be a top-class dancer.
你得很有毅力才能成為一名頂級舞蹈家*fA,Nequ.G.xv6&~^YcN。

w|25z=F,hNHOy,NJI&xdpDc1pTS|L+QX&uNOwn 來源:可可英語 http://www.ccdyzl.cn/broadcast/201804/550910.shtml