1.
side-opening two-row tandem stalls
侧出式双行串列挤奶台
2.
a race between ancient chariots.
驾驶双轮双马的古战车进行的速度赛。
3.
Problems, always problems.
福不双至，祸不单行。
4.
frontoparallel plane horopter
前额平行面双眼单视界
5.
two-engine-out condition
双发停车的飞行状态
6.
two-winged insects characterized by active flight.
飞行活跃的双翅昆虫。
7.
straight-compound cycle
平行双轴(燃气涡轮)循环
8.
external planetary arrangement
外啮双排行星齿轮机构
9.
paranemic spiral
平行螺旋，反向双股螺旋
10.
Troubles never come singly
福无双至,祸不单行
11.
Blessings never come in pairs; misfortunes never come singly.
福无双至，祸不单行。
12.
rising-stem double-disk parallel slide valve
明杆平行式双闸滑阀
13.
a tough pair of walking boots
一双结实的步行靴.
14.
acceptances with two bank names
双具名银行承兑汇票
15.
A publication issued once every two weeks.
双周刊隔周发行的刊物
16.
a backhand shot made holding the racquet in both hands.
双手握拍进行反手回击。
17.
"I lost two teeth, my contract, and the game."
(意译)福无双降,祸不单行
18.
Both sides strove to satisfy the contract.
双方都努力履行契约。