然而，不幸的是，弹出窗口容易使人混淆和反感。
Unfortunately, however, pop-up Windows are confusing and annoying.
所有这些使人混淆不清的问题，都可以利用被动语态来加以避免。
All these confusing questions can BE avoided by using the passive.
按照历史习惯，天文学家用星等标这种容易使人混淆的方法来度量恒星的视亮度。
Deferring to historical custom, astronomers, measure the apparent brightness of stars through the magnitude scale, a very confusing way.
应用推荐