Tetracyclinonitrile
四環(huán)素腈
??? 情景例句
He is behind the rest of the class in reading.
他在閱讀方面不如班上的其他同學(xué)。
Idle people (folks) have the most labour (take the most pains).
懶人做工作，越懶越費力。
The books which are on the counter.
就是柜臺上的那兩本。