Phosphinous acid
[化] 三价膦酸
🧩 词语组成解析
🗣️ 情景例句
Near the Exit sign.
就在出口标志附近。
A policeman pricks up his ears.
一个警察竖起耳朵在认真地听着。
If, at the time, the British had not feared invasion, it would have been completed.
如果不是因为那时英国人害怕入侵，隧道早已建成了。