range extender

Recent models such as the Nissan Leaf and the BMW i3 are limited to go under 100 miles-though BMW offers a range extender in the form of a petrol-driven engine to recharge the battery as it drives.

最近推出的日产聆风（Nissan Leaf）和宝马（BMW）i3等车型的续航里程不到100英里，尽管宝马电动汽车在行驶时可以用汽油发动机为电池充电，将其用作一种里程扩增器。

At present, owing to battery technology and battery charging time of electric vehicle, the driving range is limited, so interest is growing in range extender researches.

但目前由于纯电动车充电时间和充电技术的限制，使得纯电动车辆续驶里程不长。

but you also have the perfect range extender.

而且你有最完善的范围扩大设置。

Miraculously, the new router had the range to reach all around my house and solved all my glitchy network problems without the need for an extender.

奇迹般地，新的路由器覆盖了我房子的所有范围，在不需要扩展器的情况下我解决了所有缓慢的网络问题。