By transaction cost, we mean the cost of reaching a bargain.
当我们说到“交易成本”的时候，我们是指达到交易的成本。
2
But it is also applied even when it is clear that the transaction is a mixture of bargain and gift.
但这即使在交易很明显是协商和赠与的混合的情况下也是适用的。
3
The risk of loss in the capital value of s currency transaction, where one side of the bargain is completed, but completion on the other side is delayed.