outer field的用法和樣例：
例句
用作形容詞 (adj.)
- It appears that the outer ditch was dug with wooden and bone implements.
有跡象表明外層的壕溝是由木制和骨制的工具挖成的。 - The rearrangement of the blastula into a three-dimensional organism with inner, middle, and outer layers occurs during gastrulation.
在原腸胚形成過(guò)程中，囊胚重新排列，形成包括內層，中層，外層的三圍組織。
