🧩 词语组成解析
penicillin
[,pɛnɪ'sɪlɪn]
n. 青霉素，盘尼西林;
🗣️ 情景例句
Oh no! It's five thirty.
哎呀 已经五点半了。
It's an air-conditioner.
这是空调。
All products have to pass strict inspection before they go out.
所有产品出厂前必须要经过严格检查。