There are two main groups of bats, which are believed to have evolved independently of each other, but both from a common ancestor.

蝙蝠主要有两大类，人们认为它们是各自独立进化的，但都来自同一个祖先。

youdao

Hama identifies two main groups particularly prone to this transformation.

滨纪子认为，有两个主要群体特别容易出现这种变化。

youdao

You can limit the search to specific info types, main groups and repair groups if required.

如有需要，可将搜索限定为特定的信息类型，主要功能组和维修组。

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"Our three main groups of people are refugees, single mothers and Japanese who are unemployed."

VOA: standard.2009.09.09

In recent weeks, two main rebel groups have signed cease-fire agreements with the Sudanese government.

VOA: standard.2010.03.21

The main opposition coalition of political parties, civil society groups, and trade unions organized the strike to remember those killed, beaten,and raped by members of Guinea's military on September 28.

VOA: standard.2009.10.28

Analysts say surprisingly little is known about the workings of the two main groups.

BBC: Analysis: Burundi's shattered hopes

The strategies are categorized into two main groups: Solar Radiation Management (SRM) and Carbon Dioxide Removal (CDR).

FORBES: Green Groups Blast U.N. Climate Panel for Alarmism

They will be dragged into what is sectarian divisiveness with many different factions among the three main groups.

CNN: Transcript of Thursday's Democratic presidential debate