If you hit the iron posts or lead to displacement of up to twice a cast-iron columns, it will immediately fail.

如果撞倒铁柱或导致铁柱移位多达两次，就会立即不及格。

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A driving instructors, said: "they stop when you learn to use iron posts, but the re-examination date was relegated to 3 months later, when the time they can not use iron posts, you must re-learn."

一名教车师傅说：他们学停车时利用铁柱，但重考日期被排到3月后，到时他们不能用铁柱，必须重新学习。

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So as to maintain stability, the existing floors composed of cast-iron posts and slab beams were methodically replaced by a new structure composed of mushroom posts and concrete floors poured on site.

为了保证稳定性，由铸铁构件和厚板梁组成的原有楼层均被由一种新的结构来取代，这种新的结构由新型连接构件和现浇混凝土楼板组成。

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Over the entrance there still remained a massive grill of Italian wrought iron, and a battered capital of marble surmounted each of the lofty gate-posts.

NEWYORKER: A Man And A Woman