up-and-over

Hurricane Gustav is sending water rushing up and over New Orleans' Industrial Canal's floodwall.

飓风古斯塔夫掀起海浪涌上新奥尔良工业运河防洪堤。

They found that in unventilated spaces levels can build up and, over time, cause health problems such as allergies and asthma.

研，在不透风空里，时，会影响健康，出现过敏、哮喘等症状。