重点讲解：
1. give birth
生（孩子）；分娩；生育；
eg. Mrs White gave birth to a fine healthy baby at her late thirties.
怀特太太在她将近四十岁时生了个漂亮的健康婴儿wcOgUKcS2JQycXopSy。
eg. Women do more than just give birth.
女人做的不仅仅是生儿育女+8MN;Eb&vMLYF。
2. serve as
用作；可当…使用；充作；
eg. Such stories serve as a spur to children's imagination.
这类故事能激发儿童的想像力yY#_fyvvF;。
eg. They drafted him to serve as their delegate.
他们选派他作他们的代表!dR@nBiOh]。
3. step in
介入，干预，插手（棘手问题）；
eg. If they step in where they're not wanted, they'll get their noses put out of joint.
如果他们介入与他们无关的事，会有人阻止他们的)^JLxa+sh=[&XsEQp。
eg. There are circumstances in which the State must step in to protect children.
有些情况下，国家必须出面保护儿童2HsAr5g#!G。
4. make sure
一定要；设法保证；
eg. You have to make sure you're comparing like with like.
你必须确保是在进行同类比较4Jkjlegk_J14#Es_H。
eg. Screen off her bed and make sure she's not disturbed.
将她的床用屏风隔开，以确保她不受任何干扰]yhxMRr.LMnr。
5. would-be
想要成为…的；
eg. I met her first when I was a very young would-be musician.
我初次见到她时，我还是个一心想成为音乐家的十分年轻的人hSJWB+*B[f,C_4f。
eg. There are many would-be actors and actresses in Hollywood.
在好莱坞有许多想要成为男女演员的人H8IUB;2vP@vW%FaNE。