Submucosal
[医] 粘膜下层的
🗣️ 情景例句
We were exposed to the latest theories on child care.
我们接触过有关幻儿保育的最新理论。
She screamed in astonishment.
她惊吓得发出尖叫。
Thus one simple fact, a change in the number of bison, had an effect on the whole wildlife chain of the plains.
因此，出现了这样一个简单的事实--野牛数目换的变化对平原的整个野生生物链都产生了影响。