fall down on

People don't usually think about balance until they fall, but little signs such as relying on handrails to go up and down stairs can be early warnings that stability is starting to go, says Jason Jackson, a physical therapist at Mount Sinai Hospital in New York.

纽约芒特西奈医院（Mount Sinai Hospital）理疗师贾森・杰克逊（Jason Jackson）说，人们总是到了摔倒的时候才想到身体平衡问题，但是一些细微的信号比如上下楼需要紧握扶手可能是肢体稳定性下降的早期信号。

He lies down on the sofa and soon fall asleep.

她躺在沙发上很快就睡著了.

I cannot believe I did not fall right down on my face.

我不能相信我居然没有摔趴在地上。

Japan has suffered its sharpest fall in exports on record as even previously robust markets hunker down against the shockwaves of the global financial crisis.

日本的出口遭到有史以来最大幅度的下降，连此前强劲的市场在全球金融危机的冲击下也采取守势。

It is surprising that gales6 are unable to blow magpie7 nests out of the trees, but the billboards8 people make with new materials fall down in strong winds and hit cars on the street.

奇怪的是，喜鹊就地取材搭的窝八九级风也吹不掉，而我们用新材料做的广告牌遇七八级风就开始砸车。这究竟是为什么？

I'm afraid the blue sky will fall down on me.

我害怕蓝天落下来砸在我的身上。

Ranger Williams yells for the visitors to run down the stairs as debris begins to fall on them.

Williams大声喊叫着让游客沿着楼梯下去，而碎片已经开始砸落。