in duplicate例句
This agreement is done
in duplicate.
本协议书一式两份.
Enclosed is our contract No. 345
in duplicate, of which please return us one copy, duly countersign.
随函附上我方第345号合同一式两分, 请会签并回寄一份.
The installations tested were of two kinds, each
in duplicate.
试验中采用的装置有两种, 每一种两份.