我很久没有弹钢琴，可能会有点生疏。
I haven't played the piano for ages—I may be a little rusty.
你可能会有点生疏，但过去的经验和教学技巧不会丢了的。
You may be a little rusty, but past experience and teaching skills won't have been lost.
昨天有个学生来问我，他的数学技能有点生疏了，是否应该选这门课。
I had a student come by yesterday and ask he's a little rusty in his math skills if he should take this course.
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