Difluoride
二氟化物
🗣️ 情景例句
That sounds very nice. When will it be?
听起来真不错，什么时候呢？
I had no idea.
真没想到。
ammunition and 400 people went sliding and crashing down to the port side of the steeply listing ship.
弹药和400个人轰地一声滑向陡斜的左舷时，