Carbocation
碳阳离子
🗣️ 情景例句
Would you like to call home?
你想跟家里通个电话吗？
Could you tell me where I can find these books?
您能告诉我在哪儿能找到这些书吗？
but each year, the dogs are still sent out into the snow whenever a traveller is in difficulty.
但每年还要派狗到雪山地里去帮助那些遇到困难的旅游者，