Having one DVT or PE means you are at high risk for another, even if you avoid air travel.

曾经发生过深静脉血栓或肺栓塞，意味着他们很有可能再次发生，即使你不坐飞机。

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Advance geological forecast, as an important guarantee means to avoid construction risk in the tunnel construction process, has been widely used.

超前地质预报作为隧道工程施工过程中规避施工风险的一项重要保证手段，已被广泛运用。

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Conclusions PFIH and resistance had an increasing tendency. So it is time to reduce and avoid the risk factors and to take some effective control means.

结论PF IH及耐药性呈上升趋势，减少或避免可能导致真菌感染的各种因素，并采取有效的防治措施刻不容缓。

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