冰川是流动成河的冰。
冰区航行拖船“涅瓦河前哨”是在圣彼得堡设计和建造的。
Ice-class tugboat "Nevskaya Zastava" ("Neva Outpost") was designed and constructed in St. Petersburg.
冰中自然形成的裂缝和隧道可能会允许一些河水流过去，而目前河下游的一座桥已经被河水冲击所侵蚀。
Cracks and ice tunnels may be allowing some water to flow through; a bridge across the river downstream has been washed out from one water surge so far.
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