Mercerisation
丝光作用
🗣️ 情景例句
Right.
对。
How much does that typewriter weigh?
那台打字机重多少？
Firemen had been fighting the forest for nearly three weeks before they could get it under control.
消防队员们同那场森林大火搏斗了将近3个星期才最后把火势控制住。