Preformation membranes
[医] 预成膜
🧩 词语组成解析
n. 预先形成\\n[医] 先成说, 预成说
n. （动物或植物体内的）薄膜( membrane的复数形式 ); 隔膜; （可起防水、防风等作用的）膜状物
🗣️ 情景例句
What a bargain! Thanks for helping me with this shopping.
真是太划算了！谢谢你带我买这些东西。
I got home, feeling very tired.
我到家时都累死了[分词作状语]
You are left-handed, but in this photograph you will see that the young girl is painting with her right hand.
你是左撇子，而在这张照片里，你会发现这个小姑娘正在用右手绘画。