Valving
装设阀门
🗣️ 情景例句
we love having you here.
我们喜欢你们住这里 。
I bought the car on Paul's recommendation.
根据保罗的推荐我买了这辆车。
It later became apparent that rabbits were developing a degree of resistance to this disease,
后来，明显看出，兔子对这种疾病已产生了一定程度的免疫力，