0 physical or mental activity needed to achieve something -- 气力；精力；努力
I'm exhausted all the time, and everything is a real effort. 我总是觉得精疲力尽，无论做什么都很费劲。
Do you want to have a look at his exam paper? It's a fairly poor effort. 你想看看他的试卷吗？成绩可是不太好。
It takes a long time to prepare the dish but the results are so good that it's worth the effort. 做这道菜很费时间，但结果大家都很爱吃，工夫真没白费。
He's jogging around the park every morning in an effort to get fit. 为了调整好身体状况，他现在每天早晨都绕着公园慢跑。
In their efforts to reduce crime the government expanded the police force. 为了减少犯罪，政府扩大了警察的队伍。
You can't expect to have any friends if you don't make the effort with people. 如果不努力去和人们交往，你就别想有朋友。
[ + to infinitive ] If we could all make an effort to keep this office tidier it would help. 如果我们都努力保持整洁，那么办公室的面貌肯定会大有改观。
It is thus not too early to contemplate other such collaborative efforts.
Trophoblasts would seem ideal targets for fetal cell sorting efforts because of their abundance at the fetal-maternal interface.
The lack of records and sufficient tracking for antiquities also hampers efforts to control the problem.
Unlike the case of tree planting, however, fallowing of food crop fields does not require labor effort and, hence, tends to weaken land rights.
I imagine myself in the coming decade celebrating and supporting others' efforts to do such things.
This misuses the effort the target article took to reason carefully.
The search took over five years of effort and co-operation by research, extension, growers and fabric manufacturers.
It would be part of an overall effort to change perceptions about women's needs, roles, and abilities.
