Urinopycnometer
尿比重瓶
🗣️ 情景例句
For payment we would prefer and L/C.
我们更愿意使用信用证的方式付款。
When do you expect to have this ready for sale?
你希望此种商品何时上市出售呢？
We're having trouble meeting your shipping schedule.
要如期出货，我们有问题。