Objective Comparison the surgery effect of ha implantation at period I in half ball scleral flap and petal like scleral flap.

目的比较半球形巩膜瓣和花瓣样巩膜瓣羟基磷灰石(HA)眼座一期植入的手术效果。

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One time, two guys cut the ball in half.

有一次，两个家伙把球切成两半。

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The upper half of the ball is removable, is under your tank to be removed also.

上半球可以移去，在水箱下也没问题。

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Once play began Pietersen was his usual free-scoring self firing a 53-ball half-century inside the opening hour.

BBC: England draw with West Indies A

There are unbroken ones, like bubbles or boils, small ones, ones as big as half a soccer ball.

NEWYORKER: Stone Mattress

Mike Blair sensed where the space was and the scrum-half zipped the ball right where Cairns was waiting to race over.

BBC: Blues 18-17 Edinburgh