effort
/ˈefət; `ɛfɚt/ n
1 [U] use of (much) strength and energy (to do sth) （做某事物使用的）力量和精力
a waste of time and effort 时间和精力的浪费
They lifted the heavy rock without effort. 他们没费劲就把那块沉重的石头抬起来了.
He must put more effort into his work. 他必须更加努力工作.
2 [C] ~ (to do sth) energetic attempt; struggle 努力; 奋斗
His efforts were much appreciated. 大家都夸他很努力.
It was a real effort to stay awake through the film. 真要强打著精神才能看完整部电影.
I will make every effort (ie do all I can) to arrive on time. 我将尽一切努力准时到达.
3 [C] result of an attempt 努力的结果
That's a good effort, ie That has been well done. 这事干得不错.