cog-wheel
cog-wheel
n wheel with teeth round the edge 嵌齿轮. =>illus 见插图.
牛津英汉双解词典
edrTRBnvbvbfdvEzudIdQg1m88q5imAx0fJs98kZOqu6gcmlb31bzg
6b0f848f2f3ee2f3081894651633e00b
Stop