Polymycin
多链丝霉素
🗣️ 情景例句
Nothing much.
没什么要紧的事。
Can you came down a bit?
可以再便宜点吗？
If fifty pence pieces are not exchanged for sweets, they rattle for months inside money boxes.
如果50便士不拿来换糖吃，则可以放在储蓄罐里叮当响上好几月。