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(zhì)會(huì )壓縮血管并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(dòng)脈和小動(dòng)脈都結實(shí)而富有彈性，這樣就可以通過(guò)動(dòng)脈來(lái)調節身體各個(gè)部分的供血量。
