He spent many hours in deep contemplation.

他花多个小时专心思考。

She bought three dresses in contemplation of her trip.

她为作一次旅三套衣服。

His mind kept branching off into the contemplation of silly things.

他总能专心于正题而尽想着愚蠢的事情。

Contemplation was abandoned for action.

停思考, 起而动。