closed gland

• 无管腺； 内分泌腺

closed gland的用法和样例：

例句

1. It is also an endocrine gland secreting at least two important hormones.
   它也是一种内分泌腺，至少分泌二种重要的激素。
2. The secretions of the anterior pituitary gland control the activities of the adrenal cortex and other endocrine organs.
   垂体前叶的分泌控制肾上腺皮质和其它内分泌腺体的活动。