作为一种日常必需品,它将随着阅读纸质报纸的一代人而消亡。
As a day-to-day essential, it will die off with the generation who read print newspapers.
这其中的区别就是,人员管理是一种项目“经理”需要具备的技能,而不是项目“管理”必需的技能。
The distinction is that it’s a project “manager” skill, but not necessarily a project “management” skill.
烟草是中国一种重要的经济作物,而氮是植物必需的矿质养分,研究烟草碳氮代谢规律,对指导烟草的生产具有重要的作用。
Tobacco is an important economic crop, and nitrogen is essential mineral element. Studies on carbon and nitrogenous metabolism of tobacco have important action on tobacco production.
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