2
Group A ( ≈ 207 words)
3
Group B ( ≈ 225 words)
3.9 9.    bacteria

释义

n.  细菌

例句

  • We wanted to know if the length of time food is in contact with a contaminated surface affected the rate of transfer of bacteria to the food. 细菌的传染

发音

BrE /əˈbændən/