Floram
重氟化銨
??? 情景例句
It has been raining constantly for two days.
雨連續下了兩天。
Would you like me to take you around introduce you?
現在讓我替你向大家作介紹好嗎？
Girls' 100-metre race: first -- Wu Dong!
女子100米賽跑：第一名--吳東！