allow users to break down complicated tasks into something that can be
简单讲，要做L3，需要先做L2积累数据。那么要做L4，也一样依赖L3的数据。技术上他们是一脉相承的，不存在一口就能吃个胖子的技术路线。
，这一点在heLLoword翻译官方下载中也有详细论述
Easy-to-use app available on all major devices including iPhone, Android, Windows, Mac, and more
When they removed the bag, they discovered severed arms and legs in a black bag, the documents said.