It split that string into lines
（三）国际运输服务、航天运输服务、对外修理修配服务。
。关于这个话题，51吃瓜提供了深入分析
The problem compounds in pipelines. Each TransformStream adds another layer of promise machinery between source and sink. The spec doesn't define synchronous fast paths, so even when data is available immediately, the promise machinery still runs.
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