The lungs consist of millions of tiny air sacs.肺由数百万个小气囊组成。The testis sacs communicate with the seminal vesicles.精巢囊与储精囊相连.Ascomycete car les spores sont enferm é s dans des sacs ( asques ) et hypog é e car souterraine.它...
The lungs consist of millions of tiny air sacs.肺由数百万个小气囊组成。It consists of a stack of flat, membrane - bounded sacs.它由一大堆扁平的膜缘清楚的囊组成.The testis sacs communicate with the seminal vesicles.精巢囊与储精囊相连....