但是总的讲来，每一种蚂蚁都有三种主要类型；雌蚁、雄蚁和工蚁。

But in general, each kind has ants of three main types: queens, males and workers.

youdao

据推测不可见的暗物质占到宇宙总质量的25%，其存在的间接证据主要是由于观察到其施加在星系和恒星上的引力作用。

Much indirect evidence for dark matter — supposedly 25 percent of the mass in the universe — comes from observing its invisible gravitational effect on visible galaxies and their stars.

youdao

澳大利亚温室气体排量占世界总排量的1.5%，主要原因是澳大利亚约80%的电能通过燃烧煤炭产生，这是最不清洁的发电方式之一。

Australia emits 1.5% of the world's greenhouse gases primarily because it generates about 80% of its electricity from coal, one of the dirtiest sources of power.

youdao