就在过去几天里delta达到了最亮，目视星等估计为1.7或1.6等。

In just the last few days naked-eye estimates put it around magnitude 1.7 or 1.6, its brightest yet.

youdao

对于以目视飞行规则飞行的飞机，是飞机将到达机场上空的估计时间。

For VFR flights, the time at which it is estimated that the aircraft will arrive over the aerodrome.

youdao

对于以目视飞行规则飞行的飞机，是飞机将到达机场上空的估计时间。

For VFR flights, the time at which it is estimated that the aircraft will arrive over the aerodrome.

youdao