billions upon billions信息详情
几十亿，几十亿
billions of───数以亿计的；亿万
hundreds of billions of───千亿
pepsico is to spend billions───百事可乐将花费数十亿美元
upon───adv.在上面地；此后；prep.在……之上；即将来临
chance upon───偶然发现[遇到]; 碰见；偶然遇见；偶然发现
drew upon───利用；开出；总结
t upon───开始
placed upon───把重点放在；强调；着重于
spit upon───对……表示侮辱；向……吐唾沫；向…吐唾沫; 对…表示藐视; 对…表示憎恶; 对…表示侮辱
A protein made up of just 100 amino acids could take on an endless number (billions upon billions) of shapes.───一个仅由100个氨基酸组成的蛋白质可以呈现无数(数十亿以上)个形状。
To overcome them, we spend billions upon billions of dollars every year on cosmetics, diet products, fashion, and plastic surgery.───为了克服缺陷，我们每年都要花费几十亿美元--在化妆品、减肥食品、流行时尚与整容手术上。
Billions upon billions of dollars.───想想那数十亿的美元吧。
Should America spend billions upon billions of dollars to send human beingssintosspace on perilous missions?───美国该不该花费数十亿数十亿的美元把人类送上太空去完成具有危险性的使命？
When there is a Wall Street emergency or an energy crisis, billions upon billions of dollars are quickly mobilized.───当华尔街出现紧急情况或发生能源危机时，数百亿美元立即就能得到调拨。