Apsidal transfer can be carried out straightforwardly or by devious ways.

比较了人造卫星在两个道间远拱点冲击过渡的迳直方式和迂回方式。

Some birds take the “wingman” approach to scoring a mate, the ornithological equivalent of two guys sallying up to a hot girl in a bar in hopes that one will get lucky.

为了追到一只心仪的“伴偶”，有些鸟会采取“迂回策略”，派出“小弟”助阵。就象有时在酒吧里，会有两个家伙互相合作向某个辣妹献殷勤，希望其中一人会成为幸运儿。