rusty

1. ADJ A rusty metal object such as a car or a machine is covered with rust, which is a brown substance that forms on iron or steel when it comes into contact with water. 生锈的

...a rusty iron gate. …一扇生锈的铁门。

2. ADJ If a skill that you have or your knowledge of something is rusty, it is not as good as it used to be, because you have not used it for a long time. 生疏的

You may be a little rusty, but past experience and teaching skills won't have been lost. 你可能会有点生疏，但过去的经验和教学技巧不会丢了的。