Ratchet relay
[電] 棘輪繼電器
?? 詞語組成解析
n. 棘輪, 棘爪\\n[機(jī)] 棘輪, 棘齒輪
relay
[r?'l?i]
n. 接替人員，替班;傳遞;接力賽;繼電器;
vt. 轉(zhuǎn)播，傳達(dá);用驛馬遞送，使接替;分程傳遞;
??? 情景例句
Are we scheduled to leave on time?
飛機(jī)準(zhǔn)時(shí)起飛嗎？
We'll exchange presents.
我們要交換禮物。
Football is a very popular game in China. Many young people like it.
足球在中國是一項(xiàng)很受歡迎的運(yùn)動(dòng)。許多年輕人喜歡足球。