不可缺少的

Vegetable and fruitage are subsidiary foodstuffs and one of the important nourishment source in human life.

蔬菜、水果是人们生活中不可缺少的副食品和重要营养来源之一，但化肥及化学农药污染阻碍蔬菜产业的健康发展，其食品安全和潜在的环境污染也令人不安。

Vegetable and fruitage are subsidiary foodstuffs and one of the important nourishment source in human life. But chemical fertilizer and chemical pesticide pollution hindrance the healthy development of vegetable industry, food safety and latent environment pollution always let us uneasy.

蔬菜、水果是人们生活中不可缺少的副食品和重要营养来源之一，但化肥及化学农药污染阻碍蔬菜产业的健康发展，其食品安全和潜在的环境污染也令人不安。

Realism is necessary, but idealism is also indispensable to increase the quality of our life.

现实主义是必须的，但是对于提高我们的生活质量来说，理由主义也是不可缺少的。

Sports agents,as mediators in sports business and markets have become a positive indictor in the promotion of sports markets.

体育经纪人作为体育市场发展的行为主体之一，直接参与体育经纪活动，成为活跃市场，促进体育事业发展的不可缺少的积极因素。

As we know,the reactive calcium is important indispensability matter during our growth.

活性钙则是人所共知的人体生长发育中不可缺少的重要的物质。

It has already become people's social activities in the factor of the indispensability, affecting the people's daily life, also affecting the rhythm of the modern and economic development.

它已经成为人们社会生活中不可缺少的因素，影响着人们的日常生活，也影响着现代经济发展的节奏。

Water is indispensable to our life and the development of national economy.

水对于我们的生活和国家经济的发展是不可缺少的。

Distance learning is a important part of education system,it is a necessary instrumentality for civil and life education.

远程教育是教育体系的重要组成部分，是实现全民教育和终身学习的不可缺少的教育手段。

The environmental monitoring data management system is the kern of the environmental monitoring labor, which is the main method to finish data audit andstatistics.

环境监测数据库是环境监测实验室的核心，是实现数据审核和统计查阅的不可缺少的手段。

Kingsley plays the Jewish Stern by a strong cast, the film is also an indispensable factor in the success.

金斯利饰演犹太人斯特恩所组成的强大的演员阵容，也是使这部影片成功不可缺少的因素。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。