within one's power;to the bes of one's ability(capacity)

用法例句

He helped everyone when he could.

他帮助所有的人，只要他力所能及。

Such things aren't within the compass of my power.

这些事不在我力所能及的范围之内。

Control expectations, and make sure you can do exactly what you say.

不要臆想，要说自己力所能及的事情。

I have come to render what service is in my power.

我来为您效一点力所能及的微劳。

Uncle Albert will do a good turn to anyone if he can.

阿伯特舅舅凡力所能及总愿给人帮忙。

be too much for one

[俗]非力所能及; 干不了, 受不了, 应付不了

I’m afraid that this task is beyond my bend.

这项任务（工作）恐怕非我力所能及。

I can't help you, I'm afraid the matter is out of my hands.

我爱莫能助, 很抱歉--此事已非我力所能及.

I consider it within my capacity to start a joint venture .

我认为开办一家合资企业是我力所能及的事。

In order to build your self esteem, set yourself targets you can reach.

为了加强自尊，应当为自己设立力所能及的目标。

This is beyond my tether.

这是我力所不能及的。

What be past my help be past my care .

力所不能及，关心也无益。

I'll do all if it is within my power.

只要能力所及，我会尽力去做的。

beyond [within] one's scope

在自己能力的范围外[内],在自己能力所不及 [所及] 的地方

beyond or within sb's/sth's capability,authority,effectiveness,etc

非[为]某人的[某事物的]能力、权力、影响等所能及

Such things are beyond my powers.

这种事是我力所不能及的。

Much more is expected of me than is possible to perform.

人们对我要求过高，超乎我力之所能及。

To be frank, this mission is beyond my might.

说实话,这一使命非我能力所及。