Presently it occurred to Tom that maybe Huck might come this very night and give the signal.
汤姆忽然想到，也许哈克今晚就会来发出信号。
2
No signal came that night.
那天晚上没有信号。
3
Any motorist driving along a country road at night must stop every mile and send up a rocket signal, wait 10 minutes for the road to be cleared of livestock, and continue.