n.輪齒；從屬地位的人或物；詐騙；雄榫

v.用雄榫連接；欺騙

The wheel engages with the cog and turns it. 輪子咬住輪齒并帶動(dòng)它轉(zhuǎn)動(dòng).

If a person doesn't do his utmost,he will be a permanent cog in the machine. 人若不竭盡全力，將永遠(yuǎn)是一個(gè)無(wú)名小卒。

The gamesters will palm the dice and will cog. 賭徒們藏骰子在手掌中并且要詐賭。