Occasionally , a sequence of fossil-rich layers of rock permits a comprehensive look at one type of organism over a long period of time.

偶尔，一个富含化石的岩层序列可以让我们持续并全面地观察一种生物。

youdao

Table 1 and Figure 1 show seven layers developed by the author; they are shown as a reversed sequence diagram.

表1和图1显示了由本文作者开发的七个层，它们按照逆序列关系图进行显示。

youdao

FGS video streaming is to code a video sequence into a base layer and multiple enhancement layers.

该编码方法通常生成两种视频流：基本层码流和增强层码流。

youdao