Every individual starts with fitness 1 at point a and can raise its fitness based on how close it gets to point B. Every command "u", "d", "l", or "r" moves up, down, left, or right, respectively.

每个个体从a点开始，并且其适应性为1，然后个体可以根据它与b点的接近程度来增加它的适应性。命令“U”、“D”、“L”或“R”分别代表上移、下移、左移或右移。

youdao

If there's a silver lining, it's that the market's moves-including lower oil prices and lower yields on government bonds, which push down mortgage rates-could end up helping the U. S. economy.

如果说还有好的一面的话，那就是当前的市场动向(包括油价走低、有助于压低抵押贷款利率的国债收益率下行等)可能最终会给美国经济带来帮助。

youdao

He said that "History shows it makes no sense to give a quick up-or-down vote to bad trade deals like the TPP that will only ship jobs overseas and lower wages in the U. S."

他说，“历史证明给TPP这类贸易协定提供快速审批权毫无意义，它只会把就业岗位送到国外，并降低美国的薪水。”

youdao

The world spent the summer worrying about terrorism and paying higher oil prices while watching the politics of the U.S. But economies were going up and down in newsworthy ways.

FORBES: Back to Work!

On days when the process moves in the forward direction, the euro is bid up, the yen is bid down, and stocks in the U.S., Europe and Australia are bid up.

FORBES: Magazine Article

He always says when the Iraqi soldiers and military are ready to stand up and defend themselves then the U.S. will stand down.

NPR: Bush Again Rejects Calls for Troop Pullout