Nbr
abbr. 腈基丁二烯橡胶（nitrile -butadiene rubber）
🗣️ 情景例句
Right.
好的。
Young man may die but old men must die.
年轻人可能会死，老年人难免不亡。
All those who have contributed towards the gift will sign their names in a large album which will be sent to the headmaster's home.
所有凑钱买此礼品的人都将自己的名字签在一本大签名簿上，签名簿将被送到校长的家里。