1.leak

n.v.

[definition]:漏洞、泄露；（使）漏出

[example]:a gas leak.

?

2.impede

vt.

[definition]:阻礙、妨礙

[example]:the lack of a common language can severely impede progress缺乏一種通用語(yǔ)言會(huì)嚴(yán)重阻礙進(jìn)程.

?

3.over the moon

phrase.

[definition]:開心到飛起

?

4.deduce

v.

[definition]:演繹、推斷

[example]:deduce sth from...

?

5.doctorate

n.

[definition]:博士學(xué)位

?

回顧：1.leak 2.impede 3.over the moon 4.deduce 5.doctorate