Undermined enamel
[医] 无基釉质, 悬空釉质
🧩 词语组成解析
v. 暗地里破坏；挖…的下面（undermine的过去分词）
enamel
[i'næməl]
n. 搪瓷;珐琅;指甲油;
vt. 给…上珐琅;在…涂瓷漆;
🗣️ 情景例句
It is pleasant to jog in the early morning.
清晨慢跑很舒畅。
Oh no! It's starting to rain.
哦，糟了！开始下雨了！
Kate, could you answer the telephone, please? I'm busy.
凯特，你能接一下电话吗？我忙着呢。