良好的内部控制好像企业的免疫系统，在危机入侵时起着抵御风险的作用，因此建立继全企业的内部控制有助于房地产企业平安地度过危机。
As an enterprise's immune system, a good internal control can withstand risks effectively. Therefore, real estate enterprises should establish and improve internal control system over the crisis.
我们公开了全髋关节置换术后由于较大的腹膜后血肿继发髋臼杯刺激髂腰肌肌腱引起痛疼的一个罕见病例。
We present an unusual case of pain after total hip arthroplasty due to a large retroperitoneal hematoma secondary to acetabular cup irritation of the iliopsoas tendon.
光纤光栅作为光通信继掺铒光纤放大器之后的又一次突破，它的出现使许多复杂的全光网络通信成为了可能。
Fiber grating is another great breakthrough in optical communications area following the progress of EDFA. Its appearance makes all complex optical networks possible.
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