挽力的英文：
drafting ability

参考例句：

tractive effort
牵引(效)力,牵引作用,挽力

drafting是什么意思：
n. 起草；制图
v. draft的现在分词形式；起草

They drafted him to serve as their delegate.
他们选派他作他们的代表。

DFL (Draft Full Load)
满载吃水装载量

They were unwilling to register for the draft.
他们不愿意登记入伍。

The boat has a shallow draft.
这条船吃水浅。

They were all a part of the drafting.
他们都参与了公约的起草过程。

ability是什么意思：
n. 能力，力量

Prerequisite: Ability to use telekinesis as a supernatural ability.
先决条件：能以超自然能力使用心灵遥控能力。

The ability of bacteria to be genetically transformable.
遗传力细菌的遗传性转化的能力。

lacking the ability needed;incapable
不胜任的;无能力的

Do not prostitute your ability.
不要滥用你自己的才能。

How long will this ability persist?
这种能力还能维持多久？