每日一词 1

diffident

  
1.adj.缺乏自信的,露出怯态的(showing modest reserve)
   eg."she was diffident when offering a comment on the professor's lecture"

 2.adv.胆怯地,踌躇地(lacking self-confidence)
   eg."stood in the doorway diffident and abashed"


近义词

adj.
reserved, unconfident

反义词

n.
unreserved, confident

词组

diffident about   对…缺乏自信心

每日一词2

conjecture

     1.n. 推测；猜想
        1）a hypothesis that has been formed by speculating or conjecturing(通常几乎没有确凿的证据)
              eg. "he dismissed it as mere conjecture"
              同义词: speculation
        2）a message expressing an opinion based on incomplete evidence(基于不完整证据表达的意见)
           同义词: guess | supposition | surmise | surmisal | speculation | hypothesis

        3）reasoning that involves the formation of conclusions from incomplete evidence(由不完整的证据得出结论的推理)

         2.vi. 推测；揣摩
         3.vt. 推测
            1）to believe especially on uncertain or tentative grounds(相信:尤指基于不确定或试探性的理由而相信)
         同义词: speculate | theorize | theorise | hypothesize | hypothesise | hypothecate | suppose

时态变化

conjectured, conjecturing, conjectures

同根词

conjectural  adj.推测的；好推测的

近义词

n.
    hypothesis, possibility, theory, opinion, view, reasoning, logical thinking
v.
expect, anticipate

词组

Goldbach Conjecture 哥德巴赫猜想（任何比2大的偶数都是两质数的和）

每日一词3

eclipse

  1.vt. 形成日食或月食；使黯然失色
       1）exceed in importance; outweigh
同义词: overshadow
       2）cause an eclipse of (a celestial body) by intervention
       eg."The Sun eclipses the moon today"
       同义词: occult

       3）cause an eclipse of; of celestial bodies
       eg."The moon eclipsed the sun"

  2. n. 日食或月食；丧失；没落(one celestial body obscures another)

时 态: eclipsed, eclipsing, eclipses