1、effective

有效的;能產生預期效果的

The project looks at how we could be more effective in encouraging students to enter teacher training.

該項目著眼于我們如何能夠更加有效地鼓勵學生參與教師培訓。

Simple antibiotics are effective against this organism.

一般的抗生素能夠有效對抗這種微生物。

實際的;事實上的

They have had effective control of the area since the security forces left.

自從安全部隊撤離后，他們實際上控制了該地區。

a restructuring that would have resulted in an effective increase on one of their most popular excursion fares.

原本會使他們最熱門的一條短途旅游線路的費用出現實質性上漲的調整

（法律、協議等）生效的，起作用的

The new rules will become effective in the next few days.

新規定將在幾天后生效。

2、shelter

(躲避惡劣天氣或危險的)遮蔽物，庇護處，掩體

The city's bomb shelters were being prepared for possible air raids.

為防御可能發生的空襲，該城市正在建防空洞。

a bus shelter.

公共汽車候車亭

(尤指躲避惡劣天氣或危險的)遮蔽，庇護，掩蔽

The number of families seeking shelter rose by 17 percent.

尋求避難的家庭戶增加了 17％。

Although horses do not generally mind the cold, shelter from rain and wind is important.

盡管馬一般不怕冷，但是一定要有個能遮風擋雨的馬棚。

為(受到警察或其他人追捕的人)提供避難所;窩藏;庇護

A neighbor sheltered the boy for seven days.

一個鄰居收留了這個男孩在他家藏了 7 天。

people sheltering illegal immigrants.

為非法移民提供庇護的人們