the second check

基本解釋

With this background, let's look at the function pthread_cond_timedwait, which you use for the second check.
有了這些背景知識(shí)，我們來(lái)看看 pthread_cond_timedwait 函數(shù)，這個(gè)函數(shù)用于進(jìn)行第二個(gè)檢查。
The second check is the opposite subset relationship, meaning that you must verify that every user in the CM group has a counterpart in the repository group.
第二項(xiàng)檢查是檢查相反的子集關(guān)系，即必須檢驗(yàn)在 CM 組中的每個(gè)用戶(hù)在庫(kù)組中是否有對(duì)應(yīng)的用戶(hù)。
Next, the reader thread needs to ensure (and this is the second check you perform) that it does not wait on the condition variable any more than the specified timeout period.
接下來(lái)，讀線(xiàn)程需要確保（這是第二個(gè)檢查）它等待條件變量的時(shí)間不超過(guò)指定的超時(shí)時(shí)間。

So that's the second thing I've just highlighted here, is that I now have the ability to check whether it does the right thing.
你知道的，一個(gè)虛數(shù),但是返回虛數(shù)就沒(méi)有什么價(jià)值了,那么這是我想要強(qiáng)調(diào)的第二件事情。
麻省理工公開(kāi)課 - 計(jì)算機(jī)科學(xué)及編程導(dǎo)論課程節(jié)選
I actually need to check the second order condition.
實(shí)際上我們還需要驗(yàn)證二階條件
耶魯公開(kāi)課 - 博弈論課程節(jié)選
So how do I check the second order condition?
怎樣驗(yàn)證二階條件呢
耶魯公開(kāi)課 - 博弈論課程節(jié)選

Once I managed to get through passport control and the second security check, I found an uncomfortable, crowded waiting area.
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