Perboric acid
[化] 过硼酸\\n[医] 过硼酸
🧩 词语组成解析
🗣️ 情景例句
I'll check it, if I may.
如果可以的话，我要核对。
I meet the boy whose aunt is a secretary.
我遇到那个男孩的姑妈是秘书。
The guards couldn't have been watchig very carefully.
警卫不可能一直认真地查看。