Calcium bentonite
[机] 钙系膨土
🧩 词语组成解析
n. <美>[地质]斑脱土(火山灰分解成的一种粘土)
🗣️ 情景例句
This dictionary is more useful than I expected.
这字典比我所预期的更有用。
At this time of the year farmers plow their fields.
在一年这时候农夫们耕作他们的土地。
It's about a time when there were black slaves in North America. It's about their fight for freedom.
（它）讲的是有一段时期，北美洲存在黑奴。影片讲述他们为自由而斗争的情况。