This limitation went away with the arrival of block-structured languages, but by then it was too late.

后来，新的编程语言支持区块结构(block)，这种限制当然也就不存在了。

youdao

The BPMN 2.0 proposal includes an optional mapping of a BPMN subset to BPEL which is restricted to block-structured flows without cycles.

BPMN 2.0提案包括了一个从BPMN子集到BPEL的可选映射，它仅限于没有循环的块结构流程。

youdao

SSDS you can think of as a structured data store in the cloud(building block service), which is accessed using Internet protocols using a basic data manipulation language.

你可以认为SSDS是一个可以存储结构化数据的云（用以构建大型应用），你可以使用基本的数据操作语言通过互联网协议对它进行访问。

youdao