[ 第三人称单数 steepens 现在分词 steepening 过去式 steepened 过去分词 steepened ]
V-I If a slope or an angle steepens, it becomes steeper. 变得陡峭 [文学性]
The road steepened and then levelled out suddenly.
路变得陡峭，然后又突然变平坦了。
The path steepens as you climb the hillside.
沿着山坡往上爬时，那条小径越来越陡。
A compression wave in decelerating flow steepens.
压缩波在减速流中变陡。
In particular, as the yield curve steepens, the commodity bubble can burst. The stock market will probably come down last.
尤其当收益曲线趋于陡直，初级产品泡沫就可能破裂，股市下跌可能最后发生。
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