Boats travel under this wall via a tunnel, then through the locks, and finally on to the Union Canal.

船只在这堵墙下通过一条隧道，然后穿过水闸，最后到达联合运河。

youdao

Canal administrators are now playing the role of traffic controllers by directing smaller vessels passing through the locks.

运河管理员现在充当交通管理员的角色，指挥较小的船穿过水闸。

youdao

Quijano says the plans had to balance the size of the locks with the cost for ships to use the canal.

Quijano先生称，新的计划必须平衡水闸的大小和船只使用运河的成本。

youdao

But in less than 20 years more than half of the world's ocean-going cargo vessels may be too large to pass through the canal's locks.

ECONOMIST: Panama

Since then they have put in more than 2, 500 days of voluntary work, moving an estimated 300, 000 tonnes of mud from the route of the canal and its locks.

BBC: Barge on a canal

Sunday morning we entered the Pacific side of the Panama Canal at the Miraflores locks.

FORBES: Cruising Through The Panama Canal