词汇	Are they happy?
释义	Are they happy? 他们幸福愉快吗?
随便看	Transition-type Firms transition type folds Transition Unit Box Assembly transition valve transition variation transition variety transition vesicle transition voltage transition waceguide transition waveguide transition wavelength transition wavenumber Transition way transition wear mode transition year transition zone transition zone index transition zone material transition zone of anal mucous membrane Transition zone of cross section Transition zone of curve widening transition zone of super elevation transition zones transition zone setting transition zone,transitional zone