1.a string of 一系列；一串

例句:A string of cars parked on the square.
广场上停放着一长串汽车。

2.fled to 逃至，逃往

例句:They had fled to America, and were beyond the grasp of their enemies.
他们逃到美洲，摆脱了敌人的控制。

3.blood pressure 血压

例句:Both diet and exercise affect blood pressure.
饮食和运动都对血压有影响。

4.spitting out 吐出

例句:The boys were spitting out of the train window.
那些男孩子向火车窗外吐口水。