With the constant development of Internet comes a great variety of new things.
跟着互联网技术的不断发铺，新生事物层出不穷。
Constant development and improvement of products, production and manufacturing, quality control.
不断研发和完善产品，生产制造，质量控制。
It has been in constant development since that time and is set to have its first release the second half of this year.
从那时开始，IronRuby就一直在开发中，并计划于今年下半年正式推出第一版。
The greatest challenge to maintaining a development schedule is that "the only constant is change."
管理开发进度最大的挑战在于“唯一不变的就是变化”。
The greatest challenge to maintaining a development schedule is that "the only constant is change."
管理开发进度最大的挑战在于“唯一不变的就是变化”。
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