The exterior walls were made of preformed concrete.

外墙是用预制混凝土建造的。

《柯林斯英汉双解大词典》

For if Buddhism is to live in the modern world, it must be treated as a living tradition, not a preformed import.

如果佛教要在现代世界永葆活力，它必须让人将其视为鲜活传统的有机组分，而非古已有之、一成不变的舶来品。

youdao

Great works are preformed not by strength, but by perseverance.

伟大的事业是靠恒心而不是靠力量完成的。

youdao

It is almost as though the body has been carelessly glued together from two preformed hemispheres.

ECONOMIST: Those space probes in full

Whatever the case, true initial analysis must be preformed by the decision makers and reconsidered over time.

FORBES: Business Aviators - Is that all they are, or should be?

With some exceptions, the platoons preformed well.

CNN: Private Ryan was a hero, but there were bums, too