volume of blood的用法和樣例：
例句
- That's because the stimulant constricts blood vessels and may reduce blood flow to the fetus.
因為這種刺激性的物質會壓縮血管並可能減小流到胎兒的血量。 - Arteries and arterioles have strong, flexible walls that allow them to adjust the amount and rate of blood flowing to different parts of your body.
動脈和小動脈都結實而富有彈性，這樣就可以通過動脈來調節身體各個部分的供血量。
