It is highly recommended to place custom code in a second source folder. In order to add a second source folder, use the following steps.

我们强烈推荐将定制代码存入次级源文件夹中。

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In fact, after school, television is the second source of education for our kids.

实际上，排在学校之后，电视对于我们的孩子来说是第二大教育信息来源。

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The second source of carbon dioxide lies outside Europe.

第二个二氧化碳的来源在欧洲之外。

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And he sees a potential to be a second-source for WiFi chips on Broadcom based devices.

FORBES: RF Micro Spikes As Barclays Ups Rating To Overweight

Under a trade deal with the European Union called GSP-plus, Sri Lanka's garment exports (its second-largest source of foreign exchange) enjoy duty-free access to the EU. But GSP-plus hinges partly on human rights.

ECONOMIST: Sri Lanka

Coal provides some 60% of its power output, and its second-cheapest source after hydropower (which is 10% of total output).

FORBES: EPA Forces Tennessee Valley Authority To Shut Dirty Coal Plants