Coak
扣榫； 栓销 sunk coak (木工)凹榫槽
🗣️ 情景例句
Please do the work at your own convenience.
请在方便时把这事做一做。
Never put off till tomorrow what you can do today.
今天能做的事绝不要拖到明天。
He was caught, put in chains, and sent to America as a slave.
他被抓住了，带上镣铐，送到美国当奴隶。