1、compel

強迫;逼迫

the introduction of legislation to compel cyclists to wear a helmet.

強制騎自行車者戴頭盔的法律的出臺

Leonie's mother was compelled to take in washing to help support her family.

利奧妮的媽媽被迫在家替人洗衣服，以貼補家用。

覺得必須(做…)

Dickens felt compelled to return to the stage for a final good-bye.

迪肯斯覺得必須返回舞臺作最后的道別。

I felt morally compelled to help.

我覺得從道義上我必須幫忙。

2、serious

嚴重的;危急的;令人擔憂的

Crime is an increasingly serious problem in Russian society.

犯罪猖獗是俄羅斯社會面臨的一個日益嚴重的問題。

The government still face very serious difficulties.

政府仍然面臨著非常嚴峻的困難。

認真的;鄭重的;嚴肅的

My parents never really faced up to my drug use in any serious way.

我父母從未認真地正視過我的吸毒問題。

It was a question which deserved serious consideration.

這是一個值得認真考慮的問題。

重要的;需要認真考慮的

I regard this as a serious matter.

我認為這件事很重要。

Don't laugh boy. This is serious.

小伙子，別笑，這很嚴肅。