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Fifth wheel
01
第五个轮子
a steering bearing that enables the front axle of a horse-drawn wagon to rotate
02
第五个轮子
an extra car wheel and tire for a four-wheel vehicle
03
第五个轮子
someone who is considered as an unneeded or unwanted person within a group of people
04
第五个轮子
a type of camper that is designed to be towed by a pickup truck equipped with a special hitch
例子
He felt more and more like a fifth wheel at the office.
The campground was filled with a variety of RVs, from compact trailers to large fifth wheels equipped with slide-outs for extra living space.
I just wanted to feel like part of the family instead of a fifth wheel.
The fifth wheel offered all the comforts of home, including a full kitchen and bathroom, making long road trips enjoyable.
After retiring, they invested in a luxurious fifth wheel to travel across the country and explore national parks at their own pace.
