1.head to 引至,通到
例句:I let the horse drop his head to crop the spring grass.
我让马低下头啃吃春天的青草。
2.break up 分手;打碎;分裂
例句:Rubber bullets were used to break up the demonstration.
橡皮子弹被用来驱散示威人群。
3.prone to 易于;倾向于
例句:As they shorten, cells become more prone to disease and death.
细胞变小后就会更容易感染疾病,也更容易死亡。
4.set up 建立;设立;创立
例句:The city police set up roadblocks to check passing vehicles.
该市警察设置了路障以检查过往车辆。