dynamic middle-layer的用法和樣例：
例句
- The next layer in the atmosphere is the thermosphere named for its high temperature.
中間層頂后是熱成層，它是因為這裡的高溫而得名的。 - Cell-wall polysaccharides and pectic substances contained in the vesicles eontribute to growth of the new wall and middle lamella inside the sac.
小泡中所含的細胞壁多糖和果膠狀物質對新細胞壁的生長和囊泡中間層的形成有重要的作用。
