1. They were digging a ditch.
    他们在挖沟。

2. They winched the car out of the ditch.
    他们用绞车把汽车从沟里吊出来.

3. All the production teams joined up to improve the irrigation network of the commune.
    所有的生产队都联合起来共同改进公社的灌溉网。

4. "I shall start at once, but you must give me your lantern; the night is so dark that I am afraid I may fall into a ditch."
    ”我马上就去，但是你必须把提灯给我。天这么黑，我怕跌进沟里去。”