There's a channel in the middle of the old street to help rainwater flow away.

旧街道中央有沟渠来排放雨水。

I wormed my way along the roadside ditch.

我慢慢地沿着路边沟渠向前走。

The rain has filled up the ditches again.

雨水又把沟渠给灌满了。

A ditch diverted water from the stream into the fields.

沟渠把水从河里引向田间。

The running water from the mountain top eroded a gulley along the slope.

从山上流下水在山坡上冲蚀出沟渠。

It is that treat the person who love you chillily,digging a ditch nobody can jump out.

用自己冷漠心，对待爱你人，掘出了无法跨越沟渠。

The stream from the mountain slope fretted a channel through the soft earth along the mountain foot.

"山坡上下来流侵袭着松软土地,沿着山脚跟形成了沟渠。"