vascular system造句

1、Before menopause, the vascular system depends on estrogen for maintenance.
在绝经以前，血管靠雌激素的保养。

2、In some cases, secondary damage in the vascular system or opposite kidney may account for this.
有些病例，可能是由于脉管系统或对侧肾脏有继发性损害之故。

3、The vascular system changed complexly from the top of the pedicel to the base of the locule.
自花梗顶部至子房室基部，维管束系统发生复杂的变化。