Prisms providing deviations ranging from about 15� � to roughly 45� � are available commercially.市场上能买到的棱镜的偏转角大约从15°到45°.Inter - satellite ranging is crucial in Gravisat and autonomous navigation.星间测距是重力测量卫星和卫星自主导航的关键技术....
豹向来单独猎食，所以如果受伤了就无法捕猎。A leopard hunts alone, and an injured leopard cannot hunt.猎鹿于1959年在苏格兰被禁止。Deer hunting was banned in Scotland in 1959.警察伸手抚摸那只猎狼犬。The policeman reached down and petted the wolfhound....