词汇	sightseeing forestry
释义	sightseeing forestry 观光林业
随便看	time-varying investment opportunities Time-varying keys time-varying linear element time-varying linear filter time-varying linearization Time-varying linear model time varying linear sequential machine time varying linear system time-varying linear system time-varying linear systems time varying load time-varying load time-varying lot size time varying lot sizes approach time-varyingmap parameter time-varying mechanic time varying mechanics time-varying mechanics time varying media time-varying media time-varying meshing time-varying meshing stiffness time-varying mesh stiffness time-varying-mesh-stiffness time varying messing stiffness