To create frottage art, we must touch the object we want to rub over…

和以往拍照不同，拓绘，是要去碰触拓绘的物品…

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We must keep in touch with each other.

大家要经常通气。

《新英汉大辞典》

We must always keep in touch with these guiding lights during our times of adversity; because it is actually these people, who help us in keeping our feet firmly rooted to the ground.

我们必须始终和这些在我们困难时给我们指明方向的人保持联系，因为实际上是这些人帮助我们更稳地站在地上。

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