无法逃离的背叛 Betrayal Knows My Name ; Uraboku ; BOY LOVE
无靠背的 [家具] unbacked
无背带的 strapless
无法逃离的背叛主题曲 uraboku
无法逃离的背叛原声集 Uraboku
孤独无助的背面 lonly back
红色无背带的泵浦 red strapless pumps
无法拾取的背景 Unpickable background
最近的一天，这家小饭馆里座无虚席，顾客们坐在无背座椅上，饭菜都盛在普通的白色碗碟里。
On a recent day all seats were full in the simple restaurant, where diners sit on backless chairs and eat from plain white dishes.
分别对开口有背压活塞环和整体无背压活塞环的工作原理和结构作了阐述。
The work principle and structures of backpressure piston rings and integral non-backpressure piston rings were expounded.
为了减少磨损，提高活塞环的使用寿命，对整体无背压活塞环的设计进行了研究。
The design of integral non-backpressure piston rings was studied in order to reduce wear and to raise the piston ring life.
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