Baryte
重晶石
🗣️ 情景例句
It's a privilege to know you.
认识您是我的荣幸。
I was born anAmerican; I live an American; I shall die an American.
我生下来是美国人，活着是美国人，死时也是美国人。
It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.
据估计，在英国蜘蛛一年里所消灭昆虫的重量超过这个国家人口的总重量。