Colemanite
n. [矿]硬硼酸钙石
🗣️ 情景例句
Why don't we take a walk down to the river?
我们何不一路散步到河边去呢？
The whole world knows that.
那个事人人皆知。
The search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening.
事实上搜寻工作很困难，因为常常是早晨在甲地发现那只美洲狮，晚上却在20英里外的乙地发现它的踪迹。