单词	visual aids
释义	visual aids 直观教具
随便看	altitude control device altitude controller altitude control lever altitude-control valve altitude conversion altitude conversion table altitude converter altitude correction altitude correction factor altitude correction of zenith difference altitude curve altitude data altitude data unit altitude date unit altitude datum altitude decay altitude decompression sickness altitude delay altitude dial altitude difference altitude difference method altitude-direction indicator altitude disease altitude distance diagram altitude effect khjg khjs khlp khlw khlz khmm khqy khrw khtx khwb 坏包儿坏名坏坯子坏处坏头坏头儿坏家伙坏小子坏心眼儿坏意