重点讲解：
1. no longer 不再；已不；
例句：He must face up to the fact that he is no longer young.
他应该勇于正视自己不再年轻这一事实&n6*21)h@Kw-8e7|@X。
2. be designed to do sth. 预定；指定；
例句：Air bags are designed to soften the impact of a car crash.
气囊用来减轻汽车碰撞的冲击力rRZ3@ci4B6^]WCg。
3. up to 高达；多达；
例句：The cottage could accommodate up to five people.
这间小屋最多能容纳5个人,1d7Hba6|k*5FsP&。
4. as well as 除…之外；也；还；
例句：The mind needs exercise as well as the body.
大脑同身体一样需要锻炼4g#5%wqz7Y~Z8iShgnMi。