讲解: 1. at present 目前,现在
例句:I don't need the dictionary at present.
我现在不需要这本字典。
2. according to 根据,按照;取决于
例句:They both played the game according to the rules.
他们两个都按照那些规则进行了这场游戏。
例句:Prices vary according to the quantity ordered.
价格根据所订数量而变化。
3. be worth 值得
例句:Any of these devices can be worth the investment.
这些设备中的任何一个都是值得投资的。