1.prime minister 首相，總理

Did you listen in to the Prime Minister yesterday evening?
你昨晚收聽首相的廣播講話了嗎?

He met with the Prime Minister of Japan for an hour and a half.
他和日本首相會晤了一個半小時。
2.pledge to 保證

He would keep his pledge to the utmost of his power.
他將極力信守他的誓言。

In the Second Training we pledge to practice generosity and not support social injustice and oppression.
在第二項訓練中，我們保證，實踐寬宏大量，不支持社會不公正和壓迫。

3.build up 增進，加強

My neighbourhood has really been built up.
我的周圍一帶確實蓋滿了房子。

The area has been built up since I moved.
自我搬家以來這個地區就不斷地蓋起了新房。