Deltamethrin
[化] 溴氰菊酯
🗣️ 情景例句
You were four or five years old, I think.
当时你才四、五岁 我想。
The whole book is produced and edited in the pursuit of excellence.
这本书在出版和编辑全过程都力求完美。
Von Frisch watched the wagging dance very carefully.
冯·弗里施非常仔细地观察蜜蜂跳的摇摆舞。