1、Before menopause, the vascular system depends on estrogen for maintenance.
在絕經(jīng)以前，血管靠雌激素的保養(yǎng)。

2、In some cases, secondary damage in the vascular system or opposite kidney may account for this.
有些病例，可能是由于脈管系統(tǒng)或?qū)?cè)腎臟有繼發(fā)性損害之故。

3、The vascular system changed complexly from the top of the pedicel to the base of the locule.
自花梗頂部至子房室基部，維管束系統(tǒng)發(fā)生復(fù)雜的變化。

vascular system翻譯