它也是一种内分泌腺，至少分泌二种重要的激素。
It is also an endocrine gland secreting at least two important hormones.
硅藻已经通过胞外分泌二氧化硅，这是细胞直接把物质分泌出细胞壁的一个生物过程。
Diatoms already secrete silica by exocytosis-a biological process by which cells direct secreted material outside the cell walls.
树木分泌的天然化学物质异戊二烯和萜烯被认为可保护树叶免受过多热量和阳光的伤害。
Trees produce natural chemicals, called isoprene and terpene, that are thought to protect their leaves from too much heat and sunlight.
应用推荐