食指的英文：
forefinger
index finger
pointer finger

參考例句：
  • the apposition of thumb and forefinger
    大拇指與食指并列
  • The little child took her ear between her thumb and forefinger and tugged it playfully.
    小孩用大拇指和食指捏住她的耳朵，拉著玩。
  • His hand went into his pocket and a forefinger felt its way under the flap of the envelope, ripping it open in jerks
    他把手伸進(jìn)兜里，一只食指摸索到信封的口蓋，分幾截把信扯開了。
  • The thumb is opposable to the forefinger.
    大姆指可與食指相對(duì)。
  • His finger has swelled up.
    他的食指腫起來了。
  • To shoot(a marble)with the thumb over the bent forefinger.
    彈玻璃彈子拇指在彎曲的食指上方射出(彈子)
  • The competitor's fingers shall be outside the trigger guard while reloading.
    因此在重新裝填彈藥時(shí)選手的食指一定要置于扳機(jī)護(hù)弓之外。
  • With your right hand lightly grasp the grip and place your index finger lightly over the shutter button.
    用您的右手輕輕握住相機(jī)手柄，并把您的食指輕輕地放在快門按鈕上。
  • You distance all rivals, and may soon touch the sky with your forefinger
    你把一切敵手都遠(yuǎn)遠(yuǎn)拋在后面，不久就能用你的食指觸著天了。
  • Also, Americans often indicate "OK" with their thumb and forefinger touching to form a circle
    還有，美國(guó)人通常用大拇指及食指環(huán)繞起一個(gè)圓圈表示「沒問題」。
forefinger是什么意思：
n.食指
  • He held it between the tips of his thumb and forefinger.
    他用他大拇指和食指尖拿著它。
  • He hold it between the tips of his thumb and forefinger.
    他用大拇指和食指尖拿著它。
  • To shoot(a marble)with the thumb over the bent forefinger.
    彈玻璃彈子拇指在彎曲的食指上方射出(彈子)
index是什么意思：
n. 索引；指數(shù)；指標(biāo)；指示
v. 做索引，編入索引中；按生活指數(shù)調(diào)整
  • The simplest form of a composite index is an unweighted aggregates index
    綜合指數(shù)最簡(jiǎn)單的形式是不加權(quán)數(shù)的總計(jì)指數(shù)。
  • Social Sciences Citation Index
    社會(huì)科學(xué)引文索引
  • The radius represents the advancement index.
    輻枝代表進(jìn)化指數(shù)。

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