real par of exchange

例句：

1. 1. Thereal reason for his absence was due toa sudden illness.
   他缺席的真正原因是突然生病了。
2. 2. The real estate agent showed usthe house in person.
   房地产经纪人亲自带我们看了那所房子。
3. 3. Thereal test of any solutionis how it works in practice.
   任何解决方案的真正考验是在实践中如何运作。