dilates

The pupil of the eye dilates and contracts in response to light.

作为对光线作出的反应，眼睛的瞳孔会放大或缩小。

Atrial natriuretic peptide in plasma dilates veins and arteries,acts as a diuretic and inhibits neurohumoral effects.

血浆心钠肽具有扩血管、利尿、拮抗神经内分泌激素的多种作用。

Abortifacient A drug, herb or other chemical agent that dilates the cervix and/or causes the uterus to contract, resulting in the ending of a pregnancy before the fetus can survive on its own.

堕药用于扩张宫颈和/或导致子宫收缩，导致在婴儿能够自己生存以前结束妊娠的一种药物，草药或其它化学物质。