Ectoderm
n. 外胚層, 外層\\n[醫] 外胚層
??? 情景例句
Sorry, I have to say good-bye.
我不得不說再見了。
I'm certain he will be able to find the right place.
我肯定他會找到正確地點。
It had been baked by a college student who had used over 1,000 pounds of flour, 800 pounds of sugar, 200 pounds of fat, and 400 pounds of various other ingredients.
它是由一個大學生烘制的，用去1，000多磅的面粉、800磅食糖、200磅動物脂肪及400磅其他各種原料。