Expression> exTyped = i => "My int = " + i;
LambdaExpression lambda = exTyped;
//稍后：
object input = 4;
object result = ExecuteLambdaSomeHow(lambda, input);
//结果应该是"My int = 4"

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---