Unfortunately, as of this writing, these libraries don't work reliably on Google App Engine because they perform unpermitted operations such as spawning threads.

可惜，在本文撰写时，这些程序库还无法在 Google App Engine 上可靠地运行，因为它们执行了一些不允许的操作，如多线程。

youdao

Three men from east London, aged 19, 23 and 47, have been arrested on suspicion of depositing and storing waste on an unpermitted site.

BBC: Bales of household waste