At about three months after surgery, most patients are reasonably comfortable, have motion about half normal, but do notice some weakness.

大概术后三个月，大多数病人会觉得相当舒服，活动范围达到正常时的一半，但是会觉得虚弱。

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"Harry Potter and the Half-Blood Prince" will be shown in normal theaters as well as on the huge screens of IMAX theaters.

VOA: special.2009.06.12

Some of the tracks were recorded at normal speed and some were recorded at half speed.

VOA: special.2009.09.27

Played at normal speed, the half speed recordings sound twice as fast.

VOA: special.2009.09.27

But Dr Dial wanted to be sure, so he compared the accomplishments of normal partridges with birds that had their wing feathers clipped to half their normal surface area, and to even less fortunate fowl whose main flight feathers were entirely plucked.

ECONOMIST: Birds that don't fly may be using their wings to run uphill

So far this year, six tornadoes have been reported -- about half the normal number.

CNN: Fierce weather spawns tornadoes in Missouri, Arkansas

Thus far in 2013, six tornadoes have been reported, about half the normal number.

CNN: Tornado smashes Arkansas homes, destroys church