Collophanite
(=collophane)胶磷矿
🗣️ 情景例句
Look in the real-estate section of Sunday's Times.
查一查星期天的 纽约时报 房地产版。
We'll start with an orientation video. It runs about 15 minutes.
我们将从一个电视简报开始，大概放15分钟。
You may have heard of Birth Control.
你们也许听说过控制人口出生的措施。