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。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.a spool of cotton一轴棉线a spool of thread一轴线...
His advice was always sensible and his energy unbounded.他的建议总是很明智，他的精力似乎永远也用不完。His energy was unbounded and his patience inexhaustible.他有无穷的精力和无限的耐心。His ambition is unbounded.他的野心毫无止境....
Flu virus can live on shared objects ( doorknobs, keyboards, counters, etc ).病毒可以在共用物品表面生存 ( 门把手 、 键盘 、 柜台等 ).The doorknobs, hinges and copper wiring were stolen, as were the appliances and carpet.门把手 、 铰链、铜配线, 还有家用电器和地毯...