拿中国来说，尽管它是一个原油进口大国，但仍急于实现在炼油方面能够自给自足。
China, although it is set to remain a big importer of crude, is desperate to become at least self-sufficient in refining.
此外，由于有太阳能电源以及氢能源电池组，它完全能够自给自足而不需要任何形式的地面电能补给。
Also, it's totally self-sustained, thanks to a solar energy and hydrogen fuel cell combo, and it doesn't require any kind of input from the ground.
也许你尚未起步就需要资金； 也许你生意经营的非常好，完全能够自给自足，不需要向别人借一毛钱；
You might be able to build a very good business that meets all of your financial needs without raising a dime from anybody.
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