Synovin
滑液蛋白
🗣️ 情景例句
I believe stamp collecting is an interesting hobby.
我认为收集邮票是一种有趣的爱好。
He cleans th badroom every day.
他每天都清理卧室。
They're sales reps.They're very lazy.
他们是推销员，他们非常懒。