必要条件

Under market economy, an effected government is the necessary condition for the economic and social sustainable development.

在市场经济条件下，一个有效的政府是经济与社会持续发展的必要条件。

Confidence is a necessary condition for success.

信心是成功的必要条件。

Thus pain and suffering are a necessary condition of our understanding of our happiness.

所以，痛苦和磨难是我们理解我们的快乐的必要条件。

Energy is the base for human society development. And environment is the necessary condition of continuable development.

能源是人类社会向前发展的基础，环境是人类可持续发展的必要条件。

But it does seem to be a necessary condition for the long-term success of nations.

不过，人口增长却似乎是一个国家长期成功的必要条件。

Moreover, a necessary and sufficient condition for the existence of an optimal consumption is obtained.

此外，给出了最优消费存在的一个充分必要条件。

Sufficient time and energy is a necessary condition for successful investment.

充足的时间和精力是投资成功的必要条件。

Stability is a necessary condition for complex human interaction but it is not a sufficient condition for efficiency.

稳定是复杂的人类交往的必要条件，但它不是有效的充分条件。

Now that's the necessary but not sufficient condition.

这，就是必要条件，而非充分条件。

Effective management is the necessary condition of informative project success.

有效的管理是信息化项目成功的必要条件。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。