Laticometer
胶乳比重计
🗣️ 情景例句
Do I have to get it done by noon?
我必须在中午以前做完吗？
She spends much of her leisure times watching TV.
她花很多空闲时间看电视。
Boiling is always a good way of treating water.
烧开一直是水处理的一种好办法。