Acetobacter melanoganum
[机] 黑色醋杆菌
🧩 词语组成解析
[医] 醋酸杆菌属
🗣️ 情景例句
Without that, it's hard.
没有就难办了。
To fall
坠下，掉下
At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk.
在洛杉矶的一个特设的游泳池里，孩子们甚至在还没有学会走路时就已经能熟练地在水下屏住呼吸了。