Hemicholine
密胆碱
🗣️ 情景例句
The work is not as difficult as you think.
工作不像你想象的那么难。
What's your nationality?Are you American?
你的国籍是什么?你是美国人吗？
a flight attendant told us to keep calm and to get off the plane quietly as soon as it had touched down.
一位空中乘务员告诉我们要保持镇静，待飞机一着陆，就马上不声不响地离开飞机。