柯林斯詞典cog /k?ɡ/ (cogs) 1. N-COUNT A cog is a wheel with square or triangular teeth around the edge, which is used in a machine to turn another wheel or part. 齒輪2. PHRASE If you describe someone as a cog in a machine or wheel, you mean that they are a small part of a large organization or group. (大型機搆或組織中的)小人物[v-link PHR] Mr. Lake was an important cog in the republican campaign machine. 雷尅先生是共和黨競選機器中一個小人物，但卻發(fā)揮了重要作用。3. N-COUNT a tenon that projects from the end of a timber beam for fitting into a mortise (木工)凸榫 返回 cog劍橋詞典one of the tooth-like parts around the edge of a wheel in a machine that fits between those of a similar wheel , causing both wheels to move （齒輪的）嵌齒，輪齒 (also cogwheel) a wheel with cogs around its edge , used to turn another wheel or part in a machine 齒輪 習語a cog in a/the machine 返回 cog