1. perform vt.执行; 履行
例句：Resolve to perform what you ought; perform without fail what you resolve.
该做的一定要做，要做的一定要做好。

2. equipment n. 设备，装备; 器材
例句：The plant was dismantled of all its equipment and furniture.
这家工厂的设备和家具全被拆除了。

3. esophageal adj.食道的，食管的
例句：Esophageal and gastric varices and cancer were the most common causes of upper gastrointestinal bleeding in elderly patients.
食管胃底静脉曲张和恶性肿瘤是老年上消化道出血患者最常见的病因。

4. comprehensive adj. 综合的; 广泛的; 有理解力的
例句：The sewing-machine is one of the most widlyusing comprehensive industry in the world.
缝纫机是世界上使用最广泛的工业之一。
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