snowballed
v.
（计划、问题等）滚雪球似地迅速增大( snowball的过去式和过去分词 );
根本不可能（做某事），机会渺茫;
例句:
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The number of signers of the petition for a new school snowballed.
要求增设新学校而签名的人像滚雪球似的越来越多.
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Early raves prompted more people to try the book, and the reviews snowballed.
来自WSJ
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The investigation snowballed from there and has since led to several arrests.
从那里开始，调查范围迅速扩大，有几人已经被逮捕。
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From those early days the business has snowballed.
这个企业从早期开始就一直在迅速地发展扩大。
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Since then, it's fair to say things have snowballed.
来自BBC
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"It just happened and snowballed, " he said, adding that he wishes it had never begun.
来自CNN