Pectosase
[化] 果胶糖酶
🗣️ 情景例句
doing a commercial.
正在做广告。
He is speaking on another phone.
他正在接听别的电话。
All the students are expert drivers, but before they drive any of the buses, they will have to pass a special test.
所有的学生都是开车的能手，但在驾驶公共汽车之前，他们必须通过一项专门测验。