双层的英文：
double deck

参考例句：

A double-decker tourist bus.
双层游览车。

Double (or double-decker) bus.
双层公共汽车。

Double (or double-decker) train.
双层列车。

All the rooms in the hotel are double - glazed to reduce noise from the airport.
饭店里所有的房间都安装了双层玻璃窗以减少来自机场的噪音。

Long sleeve features a double-elbow and sleeve keepers to help keep your sleeves rolled up.
长袖的特点是有双层护肘和有助于卷起袖子的袖绊。

A variety of the sour cherry(Prunus cerasus var.austera)having double flowers and fruit with dark red skin.
黑樱桃一种酸樱桃(欧洲酸樱桃变种酸樱桃)开有双层花朵，结有黑红色果皮的果实

Double-deck garage
双层车库

double-mica spacer
双层云母垫片

A double-deck bus has 2 levels: you can smoke on the upper deck.
双层公共汽车的上层可以抽烟。

I don't want to sleep in a bunk bed.
我不想睡在双层床上。

double是什么意思：
adj. 加倍的；两倍的；双人的；双重的；两面派的
adv. 双重地；两倍地；成双地
n. 两倍；加倍；
v.（使）加倍

to double steal
双盗垒

double steering
双转向

The child birthrate in that area has doubled.
该地区的婴儿出生率已经增加了一倍。

double swell hand
二段式指针

What kind of double talk was this?
这是一种什么样的模棱两可的话呢？

deck是什么意思：
n. 层；甲板；露天平台
v. 装饰；打扮

The lower deck is more convenient.
下层甲板更方便些。

deck sash quadrant
顶棚窗扇形板

The fish flipped on the deck.
鱼在甲板上翻跳。

Here is a deck of card.
这里有一副纸牌。

She stood on the deck and waved.
她站在甲板上挥手告别。