Detents
(detent 的復數) n. 棘爪, 掣子, 制動器\\n[電] 掣子
??? 情景例句
That's all right.
沒關系。
He applied for a scholarship at Harvard University.
他申請了哈佛的獎學金。
The ideal to be aimed at was to devise an instrument that could record with a pen on paper,
當地震發生時，它能用筆在紙上記錄下