back and forth 托福高考

The rope swung back and forth from the branch.

绳子在树枝上回摇晃。

Sybil see-sawed the car back and forth.

西比尔将车前后回地开着。

Someone was pacing back and forth behind the curtain.

有人在幕布后踱踱去。

Insults were hurled back and forth between the two writers.

这两个作家骂。

In the Gulf of Mexico, trawlers ply back and forth year in year out, hauling vast nets that scarify the seabed and allow no time for plant and animal life to recover.

在墨西哥湾，拖网渔船年复一年往往地“辛勤”劳作，拖着巨大的渔网，刮底，没有给动植物留下恢复的时间。

This ominous, goateed man waves a pocket watch back and forth, guiding his subject into a semi-sleep, zombie-like state.

这个不吉利的、尖胡子男人回晃动一只怀表，引导他的受测人进入一个半睡眠、僵尸般的状态。