单词	勒緊褲帶
释义	勒緊褲帶1. to tighten one's belt
随便看	optical data processor，odp optical data receiver optical data recognition optical data transmission optical data transmission channel optical data transmission system optical data transmission system，odts optical deflector optical deflectors optical delay optical delay line optical delay lines optical delay line，odl optical demodulation optical demultiplexer optical demultiplexing optical demux optical densety optical densitometer optical density optical density-- od optical density--od optical density; od optical density of cloud optical density of oxalate extract value