I am proud to say that after one year of studies I have made a dramatic leap from L1 to L7.

我很骄傲地说，通过一年学习，我的英语水平有了质的飞越，从1级升到了7级。

youdao

Old father Jacob was able to enjoy his long-lost son for l7 years, and then he went to be with the Lord in Heaven.

年老的父亲雅各快乐地与他这个曾经失去的儿子一起住了17年，然后他就到天上与主在一起了。

youdao

The upper member of Taiyuan Formation in Baiping minefield is composed of three limestone layers(L7, L8 and L9), mudstone and thin coal seams.

白坪井田太原组上段主要由三层灰岩（L7、L8、L9）、泥岩和薄煤层组成，L7灰岩位于该段底部，是一7煤层顶板。

youdao

The upper member of Taiyuan Formation in Baiping minefield is composed of three limestone layers(L7, L8 and L9), mudstone and thin coal seams.

白坪井田太原组上段主要由三层灰岩（L7、L8、L9）、泥岩和薄煤层组成，L7灰岩位于该段底部，是一7煤层顶板。

youdao