Chloronorgutta
[建] 氯丁橡膠, 聚氯丁二烯, 聚氯丁烯
??? 情景例句
And the marketing of new toys and games.
還有新玩具和新游戲器具的行銷。
When are you going to swear off cigarettes?
你打算什么時(shí)候發(fā)誓戒煙？
Is it very cold in winter?
冬季的天氣很冷嗎？