闸

水库开闸放水时，巨大的水流从闸口奔涌而出，场面十分壮观。

When the reservoir gates are opened to release water, huge torrents surge through the sluice openings, making for a spectacular sight.

雨季来临前，工人们仔细检查了河上的每一道闸，确保能够正常升降。

Before the rainy season, workers carefully inspected every sluice gate on the river to ensure they could be raised and lowered normally.

施工队用沙袋和木板闸住了溪水，以便在河床上架设管道。

The construction crew used sandbags and wooden boards to block the stream so they could lay pipes on the riverbed.

水流得太猛，闸不住。

The current is too strong to hold back.