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
I'm so glad everyone is asleep.
很高兴大家都睡了。
Revolutions are not made with rose water.
革命不是绣花。
The manufacturers had to pay more money than they had anticipated, or they bought the biscuit from the student for $24,000.
饼干公司不得不付出比他们预计多得多的钱，因为为买下那学生烘制的饼干他们支付了24，000美元。