Other experts have said the Microraptor probably flew with its back wings a little under and in a direction like that of the front wings.

VOA: special.2010.03.16

Some people like to use an arrow, and the arrow points in the direction of the more electronegative end.

也可以用箭头，箭头指向,带负电的一极。

麻省理工公开课 - 固态化学导论课程节选

And as far as I see, like, I love to keep going in that direction and...

而且依我所见，我喜欢沿着这个方向继续……

我是摇滚音乐家 - SpeakingMax英语口语达人

"We are seeing progress. It's probably not as fast as we would like it to be but certainly the direction of travel is positive.

VOA: standard.2009.10.01