How could I lock in a profit?

我要如何获利呢
Because I would just--

因为我可以
he's willing to give this to me for a low price of 90 cents instead of 91 cents.

他愿意以90美分的价格给我而不是91
So what can I do?

我要怎么做
Let's say he's willing--he'd pay me,

假设他愿意付我
let's say more likely--let's say he'd pay me 93 cents.

他愿意付给我93美分
Say some guy came to me, I'm the banker, and he says,

有人来找我我是银行家他说
"I'll pay you 93 cents today to get 1 dollar in year 3,"

我愿意以93美分来买第三年的一美元
In other words, for a 3 year zero.

换句话说就是3年期零息债券
Well, I'd say, "That's wonderful."

我会说这棒极了
I'll sell them this promise in year 3, of 1 dollar for 93 cents.

我们按承诺以93美分卖出3年后的一元
Then with that 93 cents, I'll only use 91.7 of those cents

有了这93美分我只用91.7美分