Phosphowolframic acid
[机] 磷钨酸
🧩 词语组成解析
🗣️ 情景例句
You're welcome.
不用客气。
Grasp the nettle and it won't sting you.
困难像弹簧，你硬它就软。
I was only five when my father had taken me abroad, and that we eighteen years ago.
我5岁那年，父亲就带我出了国，那是18年前的事了。