橡圈结扎法-用一个橡皮圈去结扎痔团截断它的血运，痔会因缺血和缺氧而枯萎。
Ligation - a tight rubber band is wrapped around the haemorrhoids to cut off their blood supply. Starved of oxygen and nutrients, the haemorrhoids shrivel.
胎儿血氧监护仪与传统的电子监护仪(测胎儿心率，以确定胎儿是否处于应激或缺氧状态)起使用。
Fetal oxygen machines are designed to be used with traditional electronic monitors, which track heart rate to determine whether the fetus is experiencing stress or lacking oxygen.
当心脏病发作或心肌梗死时，部分心肌丧失了血供，同时缺氧的细胞坏死，导致瘢痕形成。
During a heart attack, or myocardial infarct, part of the heart muscle loses its blood supply and the oxygen-starved cells die, causing scarring.
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