隐患

Surface water made driving conditions hazardous.

路积水对行车安全构成。

Grounding and its notices were probed into construction of trolley isolative wire. How to eliminate safe hidden troubles in construction was discussed also.

探讨架空绝缘线施工时接地问题注意事项及如何消除施工中安全。

The lower self recognition of the public social and economic status hints some unharmonious factors and security issues in building the harmonious society.

民众社会经济地位自我认同较，揭示了和谐社会建设中不和谐因素和安全。

The number of youngster obesity is more and more with the standard of living's improvement.It is the hidden trouble to jeopard the youngster's health.

随着生活水平提高,我国青少年人群中肥胖人数越来越多,已成为危及青少年健康。