Lecithid
蛇毒溶血卵磷脂
🗣️ 情景例句
I have been a secretary in an insurance company.
我一直在一家保险公司担任秘书工作。
The restaurant is a mile from the hotel.
那餐厅在饭店过去约有一英里。
Yes?What's the letter.
怎么了？怎么回事？