unders
美
英 
例句
Now you can freely surf the Internet without any annoying pop-up windows and pop-under s.
现在,您可以自由地进行网上冲浪无任何恼人的弹出式窗口和弹出式unders。
There exists a great quantity of coal resources under "Three Unders" in some coal mine.
某煤矿因“三下”环境积压了大量煤炭资源。
Re-unders standing of the Two Concepts: Ethnic Group and Ethnicity
族群与族群性:两个概念的再认识
three unders in coal mining
三下采煤