Porges
梅毒血清試驗(yàn)
??? 情景例句
Yes, it was delicious.
對(duì)， 味道非常好。
You had better wash those dirty clothes.
你該去把那些臟衣服洗一洗。
and at the most critical juncture we took turns in watching that point.
在最緊急的時(shí)刻，我們輪流監(jiān)視那段河流的險(xiǎn)情。