2 sentences for 水门 (shuǐ​mén)

1. 首航飞机在降落后穿过了壮观的水门。

   shǒu​háng fēi​jī zài jiàng​luò hòu chuān​guò le zhuàng​guān de shuǐ​mén.

   The inaugural flight passed through a spectacular water salute after landing.

   Source: Dong Chinese Dictionary

2. 工程师正在检查水库的水门是否运行正常。

   gōng​chéng​shī zhèng​zài jiǎn​chá shuǐ​kù de shuǐ​mén shì​fǒu yùn​xíng zhèng​cháng.

   The engineer is checking if the reservoir's floodgates are operating correctly.

   Source: Dong Chinese Dictionary