Realization that this is the most general two state system with time independent Hamiltonian.

认识这个最普通的哈密顿量不含时双态系统。

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The New York State parks system wants to turn off the falls on the American side to replace two 115-year-old stone bridges that allow pedestrians, park vehicles and utilities access to Goat Island.

纽约州公园系统希望关停美国一侧的瀑布，以取代两座有115年历史的石桥，让行人、公园车辆和公共设施可以进入山羊岛。

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Voters in Washington State approved a system like this in two thousand four.

VOA: special.2010.06.12

The broader state system of two- and four-year colleges governed by the Tennessee Board of Regents is also part of the agreement announced Thursday.

WSJ: Higher ed systems in 10 states turn to Coursera

The College undergirds the two-party system with its state-by-state, winner-take-all approach, which, in turn, helps preserve national unity.

FORBES: Fact and Comment

Those two groups currently hold the two most powerful offices of state under the current constitutional system which reflects a past era, when the Shia were not Lebanon's largest group.

BBC: NEWS | Middle East | One year on: Lebanon political paralysis