Driving at high speed, one may well miss directionsigns.
如果开车速度很快,很有可能看不到方向标志。
2
When programming with incremental value, in radial direction, the displacement of two times the actual value, and the enclosed said directionsigns (omit the positive).
用增量值编程时,以径向实际位移量的二倍值表示,并附上方向符号(正向可以省略)。
3
The particular app in question is a subway route finder that shows route signs when you point your phone one direction or another.