Interestingly, it's the second unexercised if block that is a concern.

有趣的是，所要关注的正是第二个没有被执行的 if 块。

youdao

Thread 1 enters the if block, but is preempted by thread 2 before executing the line at //2.

线程 1 进入 if 代码块，但在执行 //2 处的代码行时被线程 2 预占。

youdao

When a call to the log method is found, we check to see if the program counter is outside the if block determined earlier.

找到对log方法的调用后，我们检查程序计数器是否在前面确定的if块外面。

youdao

But political observers point out that Republicans may worry about offending Hispanics if they try to block her nomination.

VOA: special.2009.05.30

Why? Because that block identifies a set of things that I'm going to do if the test is true.

为什么呢？这是因为这一块指令,指定了一系列的要进行的操作,如果测试为真的话。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you go back down Powell, like a block or two,

你到鲍威尔街，离这里一、两个街区的路程，

充满乐趣 - SpeakingMax英语口语达人

For example, Ryan Block only followed 25 people, so Dave Morin being among them was worth more points than if Block were following a hundred people.

FORBES: Google Buzz Reveals Tech's Twenty Most Media-Connected People

Even if regulators block their use, policyholders may still pay for their predictions indirectly.

NPR: Coastal Homeowners Stagger Under Insurance Costs

But if we block it (the bid) our media sector will suffer for years.

BBC: A question of judgement