Saemischs ulcer
[医] 塞米施氏溃疡(感染匐行性角膜溃疡)
🧩 词语组成解析
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
This is fun. It's a piece of cake.
有意思 毫不费力。
You'll be on air in two minutes.
两分钟以后你会上电视。
But suppose the earth could be covered with sensors spaced one foot apart,
假设地球上可以布满传感器，每个相隔1英尺，