Standard replacement lenses have no ability to focus, so the wearer is often stuck with excellent distance vision but must use glasses for reading.
标准的替换晶体没有聚焦的能力，因此使用者经常拥有绝佳的远距离视力但必须使用眼镜才能阅读。
2
My reading of the evidence is that technology has not killed distance - at least, not as far as the spread of ideas goes.
我对证据的解读是，技术并没有拉近距离——至少就思想传播而言是这样的。
3
At that distance, it wasn't energy from the eruption itself that charged the ash, said study co-author Giles Harrison, a meteorologist at the University of Reading in the U.K..