U4E9 | expel

Expel【v.】

1. to officially force someone to leave a school, organization, or country开除；除名；驱逐

The student was expelled for cheating on the exam.

这名学生因考试作弊被开除。

The government expelled the foreign diplomats.

政府驱逐了这些外国外交官。

• expel sb from sth

to officially force someone to leave a school, organization, or country将某人从某处开除/驱逐

The principal decided to expel the student from school for repeated violations of the rules.

校长决定因该学生多次违反校规而将其开除。

The government expelled the ambassador from the country after the diplomatic incident.

外交事件后，政府将大使驱逐出境。

2. to force air, liquid, or gas out of something排出；喷出

The machine expels waste water automatically.

这台机器自动排出废水。

The volcano expelled a huge cloud of ash.

火山喷出了一大片火山灰。

• expel sth from sth

to force air, liquid, or gas out of something将某物从某处排出/喷出

The lungs expel carbon dioxide from the body during exhalation.

肺部在呼气时将二氧化碳排出体外。

The machine expels excess water from the system to prevent damage.

机器将多余的水从系统中排出以防止损坏。