But that avoids the more essential point, namely that Wal-Mart views low labor costs and a high degree of workplace flexibility as a signal competitive advantage.
即便这样，也不应回避更为核心的问题，即沃尔玛视低劳动成本和频繁的调换工作场所作为显著的竞争优势。
2
It's essential to keep labor costs at an acceptable level.
保持劳动力成本在一个可接受的水平也是很重要的。
3
So far as I know, she was the first person to define the essential difference between work and labor.