这两个基因在染色体上的距离约为3摩根。

The distance between these two genes on the chromosome is about 3 ___morgans.

这匹摩根马非常适合家庭骑行和农场工作。

This ___Morgan is perfect for family rides and farm work.

这艘摩根帆船因其独特的设计在比赛中表现出色。

The ___Morgan sailing yacht performed exceptionally well in the race due to its distinctive design.