upper

footwear(鞋类)

1. Countable(可数名词)

   The part of a shoe that covers the foot, to which the sole and heel are attached.

   鞋面；鞋帮

   • The uppers of these boots are waterproof, making them ideal for rainy days.

     这双靴子的鞋面是防水的，非常适合雨天穿着。

   • The upper of this shoe is made from supple leather.

     这双鞋的鞋面是用柔软的皮革制成的。

   • The stitching between the upper and the sole is very strong.

     鞋面和鞋底之间的缝线非常牢固。

stimulant(兴奋剂)

1. Countable(可数名词)informal(非正式)

   A drug that makes someone feel very active and excited.

   兴奋剂；安非他命

   • He admitted to using uppers to cope with stress.

     他承认使用兴奋剂来应对压力。

   • He experienced an increased heart rate due to the overuse of uppers.

     由于过度使用兴奋剂，他经历了心率加快。

   • Many athletes have been found using uppers to enhance their performance.

     许多运动员被发现使用兴奋剂来提高表现。

1. B1Before noun(前置形容词)

   Located at a higher position or level; being the top part of something.

   较高的；上部的；上面的

   • We live on one of the upper floors of the building.

     我们住在大楼的其中一个较高楼层。

   • The plane flew in the upper atmosphere to avoid the bad weather.

     飞机在高层大气中飞行以避开恶劣天气。

   • The upper part of the coat is made of wool.

     这件外套的上半部分是由羊毛制成的。

   更多範例