1.   Day traders often borrow to buy stocks, but most of them close out their positions daily.

2.   He was referring to a common trading tactic, in which a trader borrows shares and sells them, on the expectation that the share price will fall.

3.   In a short sale, a trader borrows bonds and sells them, expecting to be able buy them back later at a lower price and pocket the difference.

4.   In a short sale, traders borrow bonds and sell them, expecting to buy them back later at a cheaper price.

5.   In a short sale, traders borrow securities and sell them on the expectation they can repurchase them at lower prices, return them, and pocket the difference.

6.   In a short sale, traders borrow securities or currencies and sell on the gamble they can buy them back at lower prices and pocket the difference.

7.   In a short sale traders borrow bonds and sell them, expecting to buy them back at a lower price and pocket the difference.

8.   In a short sale, a trader borrows bonds and sells them, speculating the chance will come to buy them back later at a lower price.

9.   In a short sale, a trader borrows shares and sells them, replacing them at a later date.

10.   In a short sale, traders borrow bonds and sell them on the bet that prices will fall.