An older unit, the lumen per square foot, or foot-candle, has become obsolete.

一种较老的单位是每平方米英尺的流明数，即英寸烛光，这种单位已经废除。

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This method has become obsolete, it is now the most passive and least effective method.

这种方法已经过时了，现在已是最被动，最没效的方法。

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This method has become obsolete, and it is now the most passive, not the most efficient method.

这种方法已经过时了，现在已是最被动，最没效的方法。

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The team led by Ray Jefferson at VETS is oriented toward preparing veterans for meaningful careers by completely overhauling a 19-year old program that has become obsolete.

FORBES: Sports And Helping Military Veterans Transition To The Private Sector

The funding model was set up when the ICC had far less income, in order to make sure it could weather any financial storms, but it has become obsolete as the game has expanded, and contributed to a sense among the full members that they own the organization.

WSJ: A Woolf at Cricket Chiefs' Door

We need to recognize the fact that our education system is NOT BROKEN but has simply become OBSOLETE.

FORBES: Rethinking Education: Why Our Education System Is Ripe For Disruption