The primary area contains a vertical button bar.

主区域包含垂直按钮栏。

youdao

The primary area contains a horizontal button bar.

主区域包含水平按钮栏。

youdao

The primary area is empty and can be used to fine-tune layout.

主区域是空的，可用于调优布局。

youdao

"The difference is the developing countries have focused on public health, prevention and primary and prenatal care in the area of maternal mortality."

VOA: standard.2010.06.23

Says they will be in product marketing, product engineering, platform I expect that to be the primary area.

FORBES: Yahoo Sales, Profit Tops Analysts' Estimates, Shares Rise (Live)

This attempt shows what can happen when a company moves away from its primary area of expertise in search of better margins.

FORBES: Amazon's Thin Margins Do Not Support Sky-High Valuation

Three schemes will focus specifically on school areas, including 12 roads around St Mary's Fields Infants School in Rowley Fields, 15 around Woodstock Primary School in Beaumont Leys, and 24 around Mowmacre Hill Primary School area.

BBC: Leicester 20mph zones given go-ahead