across：

　　adv.從一邊到另一邊;橫過;寬;從…的一邊向…;在對面;在對過；

　　prep.從…一邊到另一邊;橫過;在…對面;在…對過;在(身體某部位)上；

　　例句：

　　The general had to get his troops across the river.

　　將軍必須讓部隊過河。

　　There's a school just across from our house.

　　有一所學校就在我們房子對面。

　　This view is common across all sections of the community.

　　該社群所有階層的人普遍持有這種看法。

　　The industry needs more investment across the board.

　　這一行業需要全面增加投資。