membrane invagination的用法和樣例：
例句
- The nuclear membrane invaginates and lysosomes are internalized.
核膜內陷，於是溶酶體被內在化。 - The cell membrane invaginates, encloses the fluid or particles, then fuses again, forming a vesicle that later detaches and moves to the cell interior.
細胞膜先內陷關住液體或微粒，然後再次加以融合，形成小泡，小泡隨後脫離細胞膜進入細胞內。
