Heptachlor
[化] 七氯\\n[医] 七氯, 七氯四氢甲е(一种杀虫剂)
🗣️ 情景例句
Don't worry about it. It's nothing.
别担心，没事儿。
If you concentrate all your energies on the study of English, you will master the language.
你若全力以赴地学习英语，你会掌握这门语言的。
The officers got out and the prisoner stood to attention and saluted as they passed.
军官们下了车，战俘立正站好，并在他们从他面前经过时敬了礼。