strength各种词性变化：strong，strongly。

例句

1.

They had to check the strength of the seat attachments to the floor of the plane.

他们需要检查座椅与飞机舱面固定接头的强度。

2.

Certain materials can be manufactured with a high tensile strength.

有些材料可以制造成抗拉强度大的产品。

3.

Its oscillation depends on the strength of the gravitational field

它的振动幅度取决于引力场的强度。

动词：strengthen

形容词：strong

复数： strengths

strength

n.体力;力气;力量;强度;毅力;坚强决心;意志力量

The sea wall was not proof against the strength of the waves.

防波堤挡不住海浪的'力量。

sat down for a moment to gather my strength.

我坐下片刻积蓄力量。

Her decision to continue shows great strength of will.

她决心坚持下去，显示出了很大的意志力。