banner

单词搜索

单词发音及相关解释

返回首页

  •  
  •   你查询的单词是:required ([ ri'kwaiəd ]
  •  
  •   解释: 必需的
  •  
  •   例子: 1. Being a substance that is required for normal functioning but does not need to be included in the diet because of the body's ability to synthesize it from other nutrients.
       (氨基酸)非必需的是正常的运转所需要的物质的,但因为机体有从其它营养成分合成它的能力,因此不需要被包括在日常的食物中的
    2. The ships required the protection of naval and air power.
       船只本身需要海军和空军的保护。
  •