美[??lɑ:rm] 1 . Any escape, once it's detected, sets off the alarm .
一旦發(fā)現(xiàn)有泄漏，警報就會響起來。
來自柯林斯例句
2 . He returned to the airport to find his car alarm going off.
他回到機(jī)場時聽到自己的汽車報警器響了。
來自柯林斯例句
3 . He expressed alarm about the government's increasingly bellicose statements.
他對政府越來越具挑釁性的聲明表示擔(dān)憂。
來自柯林斯例句
4 . This has set the alarm bells ringing in Moscow.
這已給莫斯科拉響了警報。
來自柯林斯例句
5 . An alarm links the police station to the divisional headquarters.
在部門總部和警察局之間連有警報器。
來自柯林斯例句
1.fear resulting from the awareness of danger
2.a device that signals the occurrence of some undesirable event
3.an automatic signal (usually a sound) warning of danger
4.a clock that wakes sleeper at preset time
1.fill with apprehension or alarm; cause to be unpleasantly surprised;
I was horrified at the thought of being late for my interview
2.warn or arouse to a sense of danger or call to a state of preparedness;
The empty house alarmed him
Linux C alarm函數(shù) alarm也稱為鬧鐘函數(shù)，它可以在進(jìn)程中設(shè)置一個定時器，當(dāng)定時器指定的時間到時，它向進(jìn)程發(fā)送SIGALRM信號。要注意的是，一個進(jìn)程只能有一個鬧鐘時間，如果在調(diào)用alarm之前已設(shè)置過鬧鐘時間，則任何以前的鬧鐘時間都被新值所代替。需要注意的是，經(jīng)過指定的秒數(shù)后，信號由內(nèi)核產(chǎn)生，由于進(jìn)程調(diào)度的延遲，所以進(jìn)程得到控制從而能夠處理該信號還需要一些時間。 如果有以前為進(jìn)程登記的尚未超時的鬧鐘時鐘，而且本
