单词	differential block
释义	differential block 差动滑车
随便看	protect the commission protect the country against foreign invasion protect the embankment protect the environment protect the environment against pollution protect the eyes protect the face protect the farmland protect the freedom of economy protect the health of one's teeth and mouth protect the interests of investors protect the interests of the working class protect the minorities Protect the operation of spleen protect the plant Protect the plant resource base Protect the residents from flood protect the rights Protect the Right to Petition protect the trees protect the weak Protect the youth protect to suffer from disputes protect trees protect tubes for fiber optic fiber