Ortho-sulfuric acid
[化] 原硫酸
🧩 词语组成解析
原; 直
a. 硫磺的；含多量硫磺的；含（六价）硫的
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
This nation is noted for its natural resources.
这个国家以天然资源闻名。
Those planning a trip to remote areas, or intending to live in countries where drinking water is not readily available, should know about the various possible methods for making water safe.
那些计划去偏远地区旅行，或在饮用水不现成的国家居住的人，应该知道如何使水适于饮用的各种办法。