1.drive up抬高
Why does all this trading drive up the price, when buyers and sellers should theoretically cancel each other out?
理论上买卖双方应该互相取消交易,但是为何还会抬高价格?
2.at all costs不惜一切代价
You must stop the press from finding out at all costs.
你必须不惜一切代价阻止媒体查明真相 。
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