重点讲解:
1. begin to do sth. 开始;着手;
He stood up and began to move around the room.
他起身开始在屋里来回走动 。
2. at the same time 同时;
The most common multiple births are twins, two babies born at the same time.
最常见的多胎是双胞胎,两个婴儿同时出生 。
3. result in 导致;引起;造成;
Food allergies can result in an enormous variety of different symptoms.
食物过敏会引发很多不同的症状 。
4. carry out 实施;执行;实行;
I myself will firmly carry out this plan.
我本人将坚决执行这个计划 。