Alternatively, you may lick your finger and make a cross on the toe of your shoe, and not look again at the shoe until the mark has dried.

或者，你可以舔你的手指，在鞋尖上画一个十字，直到记号干了再看下鞋子。

youdao

In this taxonomy a running shoe is entirely different from a cross-training shoe why, running is an entirely different sport from training.

FORBES: On the Run

The largest of his deals is with Nike, and this spring a new Derek Jeter signature cross-training shoe goes on the market.

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