Rollerskating
(rollerskate 的现在分词) n. 旱冰鞋；滑轮鞋
🗣️ 情景例句
at the end of the semester.
就在这个学期结束的时候。
Old birds are not caught with new nests.
新巢捉不到老鸟。
'If the money was not paid promptly,
如果交款不及时，