Elementary substance
[化] 单质
🧩 词语组成解析
🗣️ 情景例句
What classes are mandatory for your major?
你的专业什么课是必修的？
The stronger the motivation, the more quickly a person will learn a foreigh language.
一个人学外语的动力越强大、学得就越快。
for the woman's eyes immediately lit up and she fetched several bottles which she placed on the counter for Harry to inspect.
因为那女售货员听完哈里的话后，马上眼睛一亮，拿出几瓶东西放在柜台上让哈里挑选。