irrigation canal的用法和樣例：
例句
- They are digging irrigation ditches.
他們在挖灌溉渠。 - The set of opinion was toward building a new irrigation canal.
大家的意見傾向於修建一條新灌溉渠。 - It took half a year to dig this irrigation channel.
開鑿這條灌渠花了半年的時間。 - Suddenly he saw water pouring out of a hole in the wall of an irrigation ditch.
他突然看到水從灌渠邊上的一個洞里大量流出來。
