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
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
- 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 recordFinding a needle in a haystack: pinpointing significant BGP routing changes in an IP networkFinding a needle in a haystack of reviews:cold start context-based hotel recommender systemSearching for a Needle in a Haystack: Predicting Security Vulnerabilities for Windows Vista.A needle in a haystack: local one-class optimizationSearching for a Needle in a Haystack: Evaluating Survey Methods for Non-indigenous Plant SpeciesMagnesium and the control of cell proliferation: looking for a needle in a haystackFinding a Needle in a Haystack: Direct Determination of Vibrational Signatures in Complex SystemsLooking for a needle in a haystack: inference about individual fitness components in a heterogeneous populationFinding a needle in a haystack using hints and evolutionary computation: the case of evolutionary MasterMind.