形容詞 assiduous:

1. marked by care and persistent effort
   同義詞：sedulous

1. An assiduous worker who strove for perfection.
   一個勤奮的工人力求做到完美
2. An assiduous and devoted admirer, student, and recorder of another's words and deeds.
   極度崇拜者崇拜另一人言行的殷勤和忠實的、學生和記錄者
3. The solider was assiduous in his duty.
   士兵認真執(zhí)行任務。
4. The book was the result of ten years of assiduous research.
   那本書是十年苦心鉆研的成果。

as.sid.u.ous

adj.（形容詞）
Constant in application or attention; diligent:
勤奮的：堅持不懈的勤奮或專心；用功：
例句：
an assiduous worker who strove for perfection.See Synonyms at busy
一個勤奮的工人力求做到完美參見 busy

Unceasing; persistent:
不停的；不懈的：
例句：
assiduous research.
堅持不懈的研究

來源：
From Latin assiduus
源自 拉丁語 assiduus
from assidôre [to attend to]
源自 assidôre [專心于]
ad- [ad-]
ad- [前綴，表.朝，向.]
sedôre [to sit] * see sed-
sedôre [座] *參見 sed-

【引伸】
assid.uously
adv.（副詞）
assid.uousness
n.（名詞）