While this may seem obvious, such is not always the case.

尽管这个似乎是显而易见，可是事实并非总是这样。

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But such gene expression is "not always the case-there are exceptions," Scherer says.

但是，这样的基因表达“并非总是如此，也有例外，”谢勒说。

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Forecasting is not always effective for any applications. The fourth section of this paper presents such a case.

预测并非对所有的问题都是有效的，本文第四部分就是这样的一个实例。

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Such is not always the case, particularly when humor is incorporated into advertising.

FORBES: 'Four Car Insurance Brands Drive Into a Bar'