单词	rban district
释义	rban district n.市区
随便看	smoke periscope smoke pervasion smoke pH smoke photometer smokepipe smoke pipe smoke pipe casing smoke pipe fire alarm system smoke pipe fire detecting system smoke pipe line fire detector smokepipes smoke plant smoke prevention and dust control smoke prevention and exhaust smoke prevention and extraction smoke prevention and venting systems smoke prevention stair smoke prevention staircase smoke plume smoke plume control smoke plume density smoke plumes mask smoke point smoke point detector smoke point improvement process