Meteorologists often refer to it as the hook echo, because of the hook shape that ends up taking.
气象学家通常将其称为钩状回波，因为它最终呈钩状。
Hook echo
原声例句
CNN 10 学生英语 2017年2月合集
CNN 10 学生英语综合听力 2016年5月合集
Meteorologists often refer to it as the hook echo, because of the hook shape that it ends up taking.
气象学家通常将其称为钩状回波，因为它最终呈现出钩状。
CNN 10 学生英语 2019年3月合集
Meteorologists often refer to it as the hook echo because of the hook shape that it ends up taking but there aren`t the only features we look for.
气象学家经常把它称为钩状回波，因为它最终呈现的是钩状回波，但并不是我们要寻找的唯一特征。
英语百科
Hook echo
A hook echo is a pendant or hook shaped weather radar signature as part of some supercell thunderstorms. It is found in the lower portions of a storm as air and precipitation flow into a mesocyclone resulting in a curved feature of reflectivity. The echo is produced by rain, hail, or even debris being wrapped around the supercell. It is one of the classic hallmarks of tornado-producing supercells. The National Weather Service may consider the presence of a hook echo as sufficient to justify issuing a tornado warning.
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