Rickettsiales
[医] 立克次氏体目
🗣️ 情景例句
I have worked hard at my major subject.
我对主修课特别用功。
A word spoken is an arrow let fly.
一言既出，驷马难追。
He could also hear night insects and the sound of waves on the shore.
他还能听到夜晚里昆虫的叫声和波浪拍击岸边的声音。