The gates opened and the crowd surged forward.

大门打开了，人群向前涌去。

《牛津词典》

In that year "a defect at the dam opened the gates, making a toxic layer of hard metals deposited at the bottom of the river come up" to the surface, she said.

就是那年，大坝的门户错误的打开，使得那些原本位于河流底部的有毒重金属层浮到了表面，她继续说道。

youdao

He told him he should be welcome, and immediately opened his gates for the mules to go into the yard.

他告诉他非常欢迎他，并且马上开打了他的大门让骡子进到院子里来。

youdao

Six South Koreans were killed when the North opened the gates to a dam near the border, flooding the banks of a river shared by both sides.

VOA: standard.2009.10.15

Each morning as the sun comes up, the gates are opened and the children flood out literally by the thousands to begin that long walk home.

NPR: Lost Generation Grows in Uganda

He'd raised the white flag on the Truman balcony, opened the gates to the enemy.

CNN: Blowing His Stack

This was intervened and prevented by a relative who happened to be a physician, or else the flood gates would have opened in the brain.

FORBES: Medicine in 2012- You, the ipatient, and Your Doctor