A few of them are almost certainly shortcomings in Ostrich, while others seem to intend to match literal full strings, like ^(로그인하지 않고)$ ("without logging in"). Presumably they're from internal use.
Constructor Options (GaplessOptions)
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但是这股海外热潮并未持续很久。其中一个重要原因便是小米汽车在国内的需求完全覆盖了产能，导致汽车出口从业者难以找到足够的车源来延续势头。
A couple of these are assuming the wrong validation semantics, like @ (which would be a decent choice outside of pattern, which always matches the full input), or similar, longer versions. Others, like [@.]*, would allow for empty email addresses, which is probably not what you want. A large chunk seem to actually be looking for phone numbers or numeric values, all of which have their own input types that are far better.，更多细节参见Line官方版本下载
多家供应链与渠道人士确认，智能手机存储芯片采购成本较去年同期已上涨超过 80%，且涨势仍未见放缓迹象。
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