Bacterial plaque
牙菌斑
🧩 词语组成解析
bacterial
[bæk'tiriəl]
adj. 细菌的;细菌性;
plaque
[plɑ:k]
n. 匾，饰板;胸章，徽章;[医]血小板;
🗣️ 情景例句
Why don't you go to your room, Mom, and get some sleep.
为什么不到你的房间去？妈妈， 去睡一会儿。
Please excuse me.
不好意思，请让一下。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，