官员推卸责任的现象时有发生。
高寒地区成品油管道冰堵现象时有发生。
Pipeline ice plug phenomenon often occurs in oil product pipeline in high and cold region.
随着网络技术的广泛应用，网上侵犯隐私权的现象时有发生。
The wide application net technology bring about more and more offence of network primacy.
随着网络技术的广泛应用，网上侵犯隐私权的现象时有发生。
The wide application net technology bring about more and more offence of network primacy.
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