• vt. 復制；使加倍
• n. 副本；復制品
• adj. 復制的；二重的
• vi. 復制；重復

du-，二。-plic, 折，詞源同fold, complicate. 即兩折，引申義復制。

duplicate

duplicate: [15] Like its close relative double, duplicate comes ultimately from Latin duplus ‘two-fold’, a compound adjective based on Latin duo ‘two’ and an Indo-European element *plwhich denoted ‘folding’ (it is present also in English fold and ply). English acquired this in the 16th century, and its synonym duplex (based on the extended stem *plic-) in the 19th century. In Latin, duplus formed the basis of a verb duplicāre ‘make twofold, double’, from whose past participle English gets duplicate, while duplex has given us duplicity [15].
=> double, duplicity, fold, ply, two

duplicate (adj.)

mid-15c., "having two parts, double," from Latin duplicatus, past participle of duplicare "to double," from duo "two" (see two) + plicare "to fold" see ply (v.1)). Meaning "exactly corresponding, that is an exact copy of" is from 1812.

duplicate (v.)

1620s, "to double," from Latin duplicatus, past participle of duplicare (see duplicate (adj.)). Meaning "make an exact copy" is from 1640s (implied in duplicated). Related: Duplicating. The noun is first recorded 1530s.

1. Charles scored again, with an exact duplicate of his first goal.

查爾斯再次得分,與第一次破門如出一轍.

來自柯林斯例句

2. His task will be to duplicate his success overseas here at home.

他在海外取得了成功，現在的任務就是要在國內再創輝煌。

來自柯林斯例句

3. He let himself in with a duplicate key.

他用一把復制的鑰匙打開門進去。

來自柯林斯例句

4. The manager asks the secretary to duplicate the document.

經理讓秘書復印這份文件.

來自《簡明英漢詞典》

5. Your jacket's a duplicate of mine.

你的夾克跟我的一樣.

來自《簡明英漢詞典》