1、extension

展期；延长期

He first entered Britain on a six-month visa, and was given a further extension of six months.

他最初持6个月的签证进入英国，后来又获得6个月的续签。

Ian Lentern has been granted a three-year extension.

伊恩·伦特恩已经被批准延期3年。

扩大;扩展;延伸

Many Filipinos see the bases as an extension of American colonial rule.

很多菲律宾人视这些基地为美国殖民统治的延续。

That's the logical extension of my approach.

那是对我的方法的合乎逻辑的扩展。

2、involve

需要;包含

Running a kitchen involves a great deal of discipline and speed.

料理好厨房需要把一切都安排得规规矩矩，且要讲求速度。

Nicky's job as a public relations director involves spending quite a lot of time with other people.

尼基作为公共关系主管，需要花很多时间与别人打交道。

牵涉;涉及

If there was a cover-up, it involved people at the very highest levels of government.

如果有人想要隐瞒实情,那其中就涉及政府部门最高层的人物。

a riot involving a hundred inmates.

有 100 名囚犯参与的暴动