Phthoric acid
[化] 氢氟酸
🧩 词语组成解析
🗣️ 情景例句
If you want a job in journalism, you'll need to undertake media studies.
如果你想在新闻界工作，你得学习媒体知识。
The first step is as good as half over.
第一步的成功等于事情的一半已完成。
Man-made satellites have been sent up into space by many countries.
许多国家都成功地把人造卫星送入了太空。