单词	humming
释义	请查阅词条：hum
随便看	maintain contact with maintained maintained school maintainer maintainer maintainers maintaining maintaining power maintainment maintain one's composure maintain oneself maintain one's equilibrium maintain one's position maintains maintenance maintenance agreement maintenance check maintenance contract maintenance crew maintenance dialysis maintenance fee maintenance-free maintenance grant maintenance haemodialysis maintenance hemodialysis 翻云覆雨翻供翻修翻刻翻动翻升翻印翻卷翻唱翻场 Preßluftzufuhr Preßluftzuführung Preßluftzylinder Preßmasse Preßmatrize Preßmetall Preßmutter Preßnitrierung Preßpassung Preßpolieren