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a needle in a haystack

听听怎么读
英 [ə ˈni:dl in ə ˈheɪˌstæk]
美 [e ˈnidl ɪn e ˈheˌstæk]
是什么意思
  • 释义

    落进草垛里的一根针(比喻很难找的东西);

  • 学习怎么用

    双语例句

    1. It's like trying to find a needle in a haystack.
      这简直就像大海捞针一样难。

    权威例句

    Finding a needle in a haystack-or identifying anonymous census record
    Finding a needle in a haystack: pinpointing significant BGP routing changes in an IP network
    Finding a needle in a haystack of reviews:cold start context-based hotel recommender system
    Searching for a Needle in a Haystack: Predicting Security Vulnerabilities for Windows Vista.
    A needle in a haystack: local one-class optimization
    Searching for a Needle in a Haystack: Evaluating Survey Methods for Non-indigenous Plant Species
    Magnesium and the control of cell proliferation: looking for a needle in a haystack
    Finding a Needle in a Haystack: Direct Determination of Vibrational Signatures in Complex Systems
    Looking for a needle in a haystack: inference about individual fitness components in a heterogeneous population
    Finding a needle in a haystack using hints and evolutionary computation: the case of evolutionary MasterMind.