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- An external layer, such as bark or rind. 外层外层，如树皮或果皮
- The external layer of skin is called the epidermis. 皮肤的外层叫表皮。
- The external layer of the skin is relatively impermeable to water. 皮肤的外层不透水。
- The produced LAB is a fibrous bone tissue resembling the human bone during mineralization, with an external layer formed by osteoblasts markedly positive for osteocalcin. 新生组织为骨再生过程中成骨细胞及矿化组织提供了理想来源。
- External layer semi-purse-string suture 外层半荷包缝合
- limiting, external layer of retina 视网膜外界膜
- Using Lignin in External Layer of Fruit-Raising Cap Paper 木素在育果套袋外袋纸中的应用
- He is just listening in external of that room. 他正在那房间的外面留神听着。
- This news program only covers external events. 这一新闻节目只报道国外消息。
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- She sets great store by external politeness. 她很注重表面的虚礼。
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- limiting external layers of retina 视网膜外界膜
- There is a fine layer of dust on the desk. 桌子上有一层薄薄的尘土。
- The middle, usually fleshy layer of a fruit wall. 中果皮果皮中间通常含肉较多的那一层
- The bottom layer is a mixture of sand and clay. 最下面的一层是沙和泥的混合物。
- A fine layer of dust covers everything. 所有的东西都盖了一层薄薄的灰尘。
- A layer, as of doubled-over cloth or of paperboard. 一层一层，如折叠过的布料或纸板的
- A surface, layer, or mass of frozen water. 冰面冻结的水的面、层或块
- Our external trade has expanded during recent years. 我国的对外贸易近几年来有所发展。
