幸运吧2016
上下左右前后Before and after the up and down or so双语例句1.我认为那是个明显的优势——上下左右前后自由移动，甚至开出路外。I think that's a clear advantage — just sort of being able to kind of move over and around and up and down and get out of the way. bbs.zxxk.com2.研究者们认为，这些纹路显示了这种鸭嘴龙的牙齿运动很复杂，包括了上下、左右、前后的运动。The researchers say the scratches reveal that the movements of hadrosaur teeth were complex and involved up and down, sideways and front-to-back motion. article.yeeyan.org3.直升机和固定翼飞机相比，直升飞机的飞行更加灵活，直升机是六自由度的，也就是说直升机可以上下前后左右飞，直升机还能悬停。Helicopters and fixed-wing aircraft, helicopters flying more flexible, helicopters are six degrees of freedom, that is to say around a helicopter can fly up and down, the helicopter can hover.
