Tosate
对甲苯磺酸基团
🗣️ 情景例句
Then why are you and Daddy
那为什么你和爸爸
It is one thing to speak much and another to speak pertinently.
话讲得多是一回事，讲得恰当是另一回事。
George showed me to the guestroom which, he said, was rarely used.
乔治把我领进客房，说这间很少使用。