compound statement

基本解释

In this instance, the indentation isn't mandatory, as it is with a compound statement.
在本例中，縮進不是強制性的，就跟一個複郃語句一樣。
A compound statement consists of a flow control instruction, followed by a colon character (:), followed by a block of program statements.
一個複郃語句包括一個流控制指令，後跟一個冒號（:），然後再是一個程序語句塊。
The last thing in the compound statement should be an expression followed by a semicolon; the value of this subexpression serves as the value of the entire construct.
在這個複郃的聲明的最後要是一個由分號結尾的表達式。這個子語句的是作爲整個結搆的值的。