1.Y chromosome Y染色体
2.makeup 构造，组成
The ideological
makeup of the unions is now radically different from what it had been.
这些协会的意识形态构成如今与过去大相径庭。
3.mean to do 有意
I didn't
mean to hurt you.
我不是有意要伤害你。
4.take up 开始从事
He did not particularly want to
take up a competitive sport.
他并没有特别想要开始从事竞技性运动项目。
5.fascinate someone 使着迷
Politics
fascinated Franklin's father.
政治让富兰克林的父亲着迷。
6.not least 尤其
There is a great deal at stake,
not least in relation to the environment.
这事关重大，尤其是与环境的关系。
7.set out to do 开始努力
He has achieved what he
set out to do three years ago.
他已经完成了3年前开始努力做的事情。
8.pore over 仔细研究
We spent hours
poring over travel brochures.
我们花了几个小时仔细研究旅游宣传册。
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