这样表达式认为在时间以前测试并且明显配齐。

Such expressions are thought to be tested by time and therefore evidently true.

youdao

这会导致其他操作数也被转换成64位的类型，这样在对表达式进行赋值时就不需要再进行转换了。

This will cause the other operands to be promoted to 64-bits and no further conversion is needed when the expression is assigned.

youdao

这样可能使表达式变得很复杂。

But maybe that will give you very complicated expressions.

youdao

I just want to remind you, if I wanted to, for example, type in an expression like that, notice the syntactical form, it's an expression, a number, followed by an operand, followed by another expression.

我想要提醒下大家，如果你想要，例如，输入一个这样的表达式，注意语法形式，这是个表达式，一个数字，后面是一个运算对象，后面是另外一个表达式。

麻省理工公开课 - 计算机科学及编程导论课程节选

You might recall from grade school sometimes you put things in parentheses so that your addition happens first, then your multiplication, otherwise multiplication would happen by default first.

你们可能会想起小学时，将一些加法表达式,放在圆括号里，这样加法可以先计算，然后是乘法，否则，乘法默认先发生。

哈佛公开课 - 计算机科学课程节选

That code says the following: the IF says, I've got an expression, I'm going to evaluate it.

代码的含义是这样的：,我有一个表达式，我会去对这个表达式求值。

麻省理工公开课 - 计算机科学及编程导论课程节选