難題的英文：
difficult problem

參考例句：
  • The famous mathematician is brainiac who would rather work on solving complex mathematical problems than sleep at night.
    這位著名數(shù)學(xué)家十分聰明和勤奮，寧愿晚上不睡覺(jué)，也要解開(kāi)復(fù)雜的數(shù)學(xué)難題。
  • explain puzzles
    解釋難題
  • A tangled skein of problems
    盤根錯(cuò)節(jié)的一堆難題
  • A tough game,assignment,problem,journey
    艱苦的比賽、困難的任務(wù)、難題、艱辛的旅程.
  • luckily, the answer to this puzzle is very simple
    幸虧這個(gè)難題的解答倒十分簡(jiǎn)單。
  • In ethics, there is a poser about the difference between killing and letting die.
    就道德而論，任其死亡是否有異于殺害是一個(gè)難題。
  • Bill always has a card up one's sleeve, so whenever faced up with a puzzle, he could find a way.
    比爾總有錦囊妙計(jì)，所以任何時(shí)候遇到難題，他總能找到方法解決。
  • I've just had a brainwave; I know a new approach to the difficult problem!
    我剛才靈機(jī)一動(dòng),突然想出了一個(gè)解決這一難題的新辦法!
  • Do a puzzle
    解決難題
  • The complexities of higher mathematics
    高等數(shù)學(xué)的難題.
difficult是什么意思：
adj. 困難的；執(zhí)拗的；不易相處的
  • The exercise is that difficult!
    練習(xí)題那么難！
  • You must admit the task to be difficult [ that the task is difficult ].
    你應(yīng)當(dāng)承認(rèn)這項(xiàng)任務(wù)是艱巨的。
  • You must admit the task to be difficult [that the task is difficult].
    你必須承認(rèn)這項(xiàng)任務(wù)是困難的。
  • This is as difficult a problem as you are likely to meet.
    像這樣的難題，你可能會(huì)碰到。
  • Russian is a difficult language to master.
    俄語(yǔ)是門難以精通的語(yǔ)言。
problem是什么意思：
n. 難題，困難；邏輯題
  • It was a complex problem.
    這是一個(gè)復(fù)雜的問(wèn)題。
  • Is the problem that easy?
    問(wèn)題有那么簡(jiǎn)單嗎?
  • This is a prime problem.
    這是一個(gè)有關(guān)質(zhì)數(shù)的問(wèn)題。
  • These are the resolved problems.
    這些是已經(jīng)解決的問(wèn)題。
  • The housing problem is bound up with the problem of gale controls.
    住屋問(wèn)題涉及租金控制問(wèn)題。

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