1、strength

体力;力气;力量

She has always been encouraged to swim to build up the strength of her muscles.

一直有人鼓励她去游泳以强健体魄。

He threw it forward with all his strength.

他使尽全力把它扔向前方。

(面对困境的)信心，勇气

Something gave me the strength to overcome the difficulty.

有些事给了我克服困难的勇气。

His strength is an inspiration to me in my life.

他的自信是对我人生的一种鼓舞。

实力;影响力

America values its economic leadership, and the political and military strength that goes with it.

美国重视其经济领导地位以及随之产生的政治和军事实力。

The Alliance in its first show of strength drew a hundred thousand-strong crowd to a rally.

该联盟的第一次实力展示便吸引了 10 万余众参加集会。

2、struggle

奋力;努力;尽力

They had to struggle against all kinds of adversity.

他们不得不同一切困境做斗争。

Those who have lost their jobs struggle to pay their supermarket bills.

那些失业的人们想方设法以支付超市的账单。

搏斗;扭打

She screamed at him to 'stop it' as they struggled on the ground.

他们在地上扭打成一团，她向他尖叫着“别打了”。

We were struggling for the gun when it went off!

我们正在争夺那把枪，这时它突然走火了！