Boroarsenate
硼砷酸鹽
??? 情景例句
I cannot forgive myself for not seeing my mother when she was sick in bed.
母親病的時候我沒能去看她，為這件事我永遠(yuǎn)不能原諒我自己。
He has been to America.
他去過美國。[曾經(jīng)有過的經(jīng)驗(yàn)]
Oh good, it's Li Lei. Hi, Li Lei!
噢，是李磊，李磊你好！