A ratchet mechanism transfers the thread from spool to bobbin.一种棘齿装置把线从线轴转到梭心上。a spool of thread一轴线On dictation equipment, a spool on which magnetic tape is wound.在口述记录设备上, 一种卷绕磁带的轴....
To keep warm they burnt wood in a rusty oil barrel.他们在一只生锈的油桶里烧木柴来保暖。You'll eat so much your belly'll be like a barrel.你会吃得肚子鼓鼓的，像个大酒桶。The suppers are always a barrel of laughs.晚餐总是充满欢笑。...
I just decided I was a bit too frivolous to be a doctor.我刚刚决定说自己有点过于轻率，不适合做医生。It was frivolous of him to make such an accusation.他提出这样的指控真无聊.She has a frivolous nature and won't take anything seriously.她生性轻浮,什么事情都不肯...
The Atlantic Ocean had undergone changes in temperature and salinity.大西洋海水的温度和盐度已经发生了变化。In many sedimentary basins the salinity of the formation water increases with depth or compaction.在许多沉积盆地中,地层水的含盐量随深度或压实作用而增高.Salini...