正在: just at (that time), right in (that place), right in the middle of (doing sth)...
司令: commanding officer...
草地: lawn, meadow, sod, turf...
万能: omnipotent, all-purpose, universal...
车号: vehicle number (license plate number, taxi number, bus number, train car number)...
颠倒: to turn upside down, to reverse, back to front, confused, deranged, crazy...
发展: development, growth, to develop, to grow, to expand...
