Riga's disease
[医] 里加氏病, 恶病质性口疮
🧩 词语组成解析
🗣️ 情景例句
Well, maybe, just maybe,
嗯， 或许 ，只是或许，
There was a big crowd and we had difficulty getting a taxi.
外面有一大群人并我们有很困难招一辆出租车。
Walt invented the steam engine.
瓦特发明了蒸汽机。