1、summon

召喚;傳喚;召見

Howe summoned a doctor and hurried over.

豪叫了醫生，然后匆忙趕了過來。

Suddenly we were summoned to the interview room.

突然我們被叫進了面試的房間。

鼓起(勇氣);振作;使出(力氣)

It took her a full month to summon the courage to tell her mother.

她用了整整一個月才鼓足勇氣告訴了媽媽。

2、explain

解釋;說明

Not every judge, however, has the ability to explain the law in simple terms.

然而，不是每個法官都能用簡單的語言來解釋法律。

Don't sign anything until your solicitor has explained the contract to you.

在律師向你解釋清楚合同之前，不要簽署任何東西。

解釋;辯解;說明…的理由

'Let me explain, sir.' — 'Don't tell me about it. I don't want to know.'.

“您聽我解釋，先生。”——“別跟我說，我不想知道。”

Before she ran away, she left a note explaining her actions.

逃跑前，她留下一張便條解釋原委。

3、concentrate

全神貫注;集中（心思）

It was up to him to concentrate on his studies and make something of himself...

是否能專心學習并取得一定成就要靠他自己。

Water companies should concentrate on reducing waste instead of building new reservoirs.

自來水公司應該集中精力減少水浪費，而不是修建新水庫。

使集中;使匯集

Italy's industrial districts are concentrated in its north-central and north-eastern regions.

意大利的工業區集中在該國中北部和東北部地區。

Most development has been concentrated in and around cities.

土地開發主要集中在城市及周邊地區。