名词
中文翻译：外层谷粒
同义词：
['outer layer', 'outer grain', 'outer part']
例句：
-
1.The outer layer of the soil is rich in nutrients.
土壤的外层富含养分。
-
2. The outer layer of the leaves is covered with tiny hairs.
叶子的外层覆盖着微小的毛。
-
3. The outer layer of the skin is made up of dead cells.
皮肤的外层由死亡细胞组成。