upper

• 表示位置更高、级别更高或更靠上的。也可指地位、等级或权限较高的一方。

Describes something that is located at a higher position or level.

1. Higher in positionA2formal

   Located above something else, especially in a vertical sense.

   上面的

   • The upper shelf is too high for me to reach.
   • She lives on the upper floor of the building.
   • The upper part of the mountain is covered in snow.

   同义词elevatedoverheadsuperiortop

   反义词lower

2. Higher in rank or statusB1formal

   Relating to a higher social, economic, or hierarchical level.

   上层

   • He comes from an upper-class family.
   • The upper management made the final decision.
   • She was promoted to an upper position in the company.

   同义词elevatedexaltedhigh-rankingprivilegedseniorsuperiortop

   反义词inferiorlowersubordinateunder

• 名词，指某物位于上方或更高处的部分，也指鞋类覆盖脚面、位于鞋底以上的部分（鞋面）。

A noun referring to the part of something that is situated above or higher than the rest, or a piece of footwear covering the foot above the sole.

1. Shoe partB1formal

   The part of a shoe or boot that covers the foot above the sole.

   鞋面

   • The leather upper of these boots is very durable.
   • He cleaned the uppers of his shoes with a special polish.
   • The shoe's upper is made of breathable mesh.

2. Upper teeth or dentureB2informal

   A set of artificial teeth for the upper jaw.

   上假牙

   • He needs a new upper for his dentures.
   • The dentist adjusted the fit of her upper.
   • His upper was causing him some discomfort.

3. Stimulant drug (slang)C1slang

   A drug that stimulates the central nervous system, such as an amphetamine.

   兴奋剂

   • He was arrested for possession of uppers.
   • Uppers can cause serious health problems if abused.
   • She warned him about the dangers of taking uppers.

   同义词amphetaminebennycrankcrystalicemethpep pillspeedstimulant

   反义词depressantdowner