The doctors believe aspirin helps heart surgery patients because it can prevent blood from thickening and blood vessels from being blocked.
医生们认为,阿司匹林对心脏手术病人有利,因为它可以防止血液增稠和血管堵塞。
DDT prevented eagle eggshells from thickening.
DDT 会阻止鹰蛋壳变厚。
It was a dangerous journey through thickening fog.
旅途中雾越来越大,险象环生。