量力而行的英文：
[Literal Meaning]
estimate/strength/aux./do
to do things according to one's abilities

[解释]
根据自己力量大小去做，不要勉强。

[Explanation]
do what one is capable to

[例子]
在清扫校园里的积雪时，老师希望学生们量力而行，能清理多少就清理多少。

[Example]
When clearing the snow on campus, the teacher hoped her students would act according to their abilities and do as they can.

[英文等价词]
to cut one's coat according to one's cloth

Don't bite off more than you can chew.
凡事量力而行。

Cut one's coat ac,cording to one's cloth(saying)spend money or produce sth within the limits of what one can afford
(谚)量力而行;量入为出