To trade down 以高价物品交换低价物品
People will trade down to own labels which are cheaper.
人们会转向购买更便宜的自有品牌商品。
In a severe recession, while some people trade down to fast food, many others eat at home more frequently to save money.
在严重的经济衰退中,一些人会选择吃快餐,而另一些人为了省钱会更经常在家里吃饭。
Trade down to the level that lets you "sleep at night."
减少交易直到达到能让你“安稳睡觉”的水平。
Those people are all in trouble because it's illegal to trade on insider information and they tracked them all down.
所有人都惹上了麻烦,因为内幕交易是非法行为,全部人都被捕了
Down here, I've just got two things to merge, and then I've got things of size two to merge and then things of size four to merge. But notice a trade off. I have n operations if you like down there of size one.
但是n的大小是不同的,是吗?在这里我们只要合并两个元素,然后是合并长度为2的列表,接下来是合并长度为4的列表,但是观察一下之间的权衡关系。
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