It sees China as a substantial source of this capital.

巴基斯坦将中国视为这笔资金的一个重要来源。

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Employee stock options can provide you with a substantial source of deferred income and permit you t…

员工股票选择权可以向你提供相当的收入来源，让你递延汤匙…

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Memory leak, which is a substantial source of errors in software systems, consumes system memory, degrading performance and eventually resulting in program crashes.

内存泄漏是软件系统中常见的一种错误，会持续消耗内存，致使系统运行效率下降，甚至导致系统崩溃。

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It adds that tighter controls on immigration could reduce the numbers of migrant workers from developing countries who are able to send money home - a substantial source of income for many Caribbean, Central American and South Asian countries.

BBC: Terrorism 'slows globalisation'

However, tackling the problem from a supply chain angle represents one of the best means of cutting off a very substantial source of income (tens of millions of dollars per year according to our estimates) from abusive armed groups.

FORBES: A Response to Global Witness

The reserve, located in the Texas panhandle, is the only long-term substantial storage source for helium in the world.

CNN: U.S. needs a strategy on helium