我坐在后座上，开始担心怎样才能在签证到期以前赶到边界。
Sat in the back, I was beginning to wonder how I was ever going to reach the border before my visa expired.
在80年代以前，债券一般上都相当简单，即包括不太复杂的现金流动结构，票面利率和到期日在发行时已定下。
Prior to the early 1980s, the bond market was comprised mainly of 'plain vanilla' bonds with simple cashflow structures, where coupon payments and maturity were fixed at the outset.
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