Rugar
[医]硫酸钡，沉淀硫酸钡[造影剂]
🗣️ 情景例句
However, through my experience in business at home and abroad.
但从事国内外的商业的经历中。
What kind of grades did you make in college?
你在学院得到什么样的等级？
Predicting the future is notoriously difficult.
众所周知，预测未来是非常困难的。