Classes of pesticide toxicity
[化] 农药毒性等级
🧩 词语组成解析
n. 级别, 阶级（class复数形式）
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
toxicity
[[tɔk'sisiti]]
n. 毒性\\n[医] 毒力, 毒性
🗣️ 情景例句
I shouldn't have done that.
我不该那么做。
Will anyone be able to fill her shoes now that she's left the company?
既然她已经离开了公司，有人能接替她的位置吗？
Which may keep company with the vessel for an hour without visible or more than occasional movement of wing.
它们随船飞行一小时也难得见其扇动一下翅膀。