“两组”造句
两组都具有通常脊椎动物才具备的两个特征。
Both groups share two attributes normally associated with vertebrates.
两组之间发生过一些激烈的争吵。
There've been some bitter exchanges between the two groups.
研究者在计算机屏幕上显示出
两组不同的字母。
Researchers flash two groups of different letters onto a computer screen.