Phthoric acid
[化] 氢氟酸
🧩 词语组成解析
🗣️ 情景例句
Philip, I took Michelle to a school play
Philip,我带Michelle看过学校演出的
We have adopted much more flexible methods in our dealings.
我们在具体操作方法上灵活多了。
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年内走的距离，