An event is an abstraction that represents the fact that something happened or is happening, such as a stock trade, a customer order, an address change, and so on.

事件是一种抽象，表示某件事情已经发生或正在发生这一事实，例如股票交易、客户订单、地址更改等等。

youdao

Next send a Sell event for the same customer and stock.

下一步，发送一个针对相同客户和股票的Sell事件。

youdao

For example, let's say one Buy event is followed by three Sells, all for the same customer and stock and in the same day.

例如，假设一个Buy事件之后发生了三个Sell事件，全都在同一天针对相同的客户和股票。

youdao

The customer was a stock trader, but a stock trader who had lost his job.

FORBES: Eventbrite, Square, AirBnB: On Putting The New into "New Economy"

Firms tag all of their trades with a unique identifier for each trade by customer, by stock and time, among other things, Lime Brokerage CEO Jeff Wecker says.

FORBES: SEC To Say 'Tag, You're It'

Stockbrokers would have to report what a customer paid for his stock, not just what he sold it for--in other words, his or her taxable profit.

FORBES: Tax Tattlers