1. The National Weather Service is trying to determine how strong the twisters were, and if the count is correct.

twister 龙卷风暴

This twister stayed in the open country, away from people or buildings, rotating at 120 mph but only moving at 5 mph.
该龙卷风停留在开阔的乡野，远离人群和建筑，以120英里的时速旋转，而仅以5英里的时速移动。

2.Take a look at the cab of this semi as it dangles from a bridge in Florida's Manatee County.

dangle 摇晃地悬挂着

The rope dangled in the breeze.
绳索在微风中悬荡。 
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