Uroazotometer
尿氮定量器
🗣️ 情景例句
John and I celebrate our fortieth anniversary next month.
下个月John和我将庆祝我们的结婚四十年纪念。
I'm good at it.
我做这个很在行。
Our service, so far, has been very well-received by our customers .
到目前为止，顾客对我们的服务质量评价甚高。