用作不及物动词
▲S+～(+A)
My bike has rusted and needs oil.我的自行车生锈了,需要上油。
用作及物动词
▲S+～+n./pron.
The rain will rust the iron roof.雨水会使铁皮屋顶生锈。

［派生词］ rusty adj.生锈的; 荒疏的‖rustily adv. 生锈地；荒疏地‖rustiness n. 生锈；荒疏
［词源］＜古英语rust(铁锈)

Iron gathers rust easily.铁易生锈。
The mower is covered with rust.割草机布满了锈。