primary yeast

例句：

1. 1. The primary function of this device is to heat the water.
   这个装置的主要功能是加热水。
2. 2. The primary goal of the company was to increase market share.
   公司的首要目标是增加市场份额。
3. 3. The primary reason for their success is their innovative approach.
   他们成功的首要原因是他们的创新方法。