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....
...the multiplicity of tasks this machine can perform.这台机器能完成的多项任务You can't expect to succeed if you attempt tasks above your ability.如果你要做能力达不到的事, 就别指望成功。Routine tasks are often delegated to inexperienced young doc...