corrode|corroded|corroding

酸性雨水会逐渐腐蚀金属管道。

Acid rain can slowly ___corrode metal pipes.

多年的忽视使这座金属桥逐渐锈蚀。

Years of neglect have ___corroded the metal bridge.

酸性雨水会腐蚀金属栏杆。

Acid rain is ___corroding the metal railings.