几乎任何可以发出声音的东西都被用来发信号.Almost anything that makes a noise has been used for signaling.水手们白日用旗,夜晚用灯,发信号.Sailors signal with flags by day and with lights at night.范阿莱姆, 在默兹河对岸, 还在用他的灯发信号.Van Alem , from across the Meuse, kep...
She must be ill, Tatiana thought...她一定是病了，塔蒂亚娜心想。I was constantly ill, with a baffling array of symptoms.我一直病着，出现了一系列让人不解的症状。Ill news flies fast.恶事传千里。Her remarks were ill-advised, to say the least.她的话不够谨慎，至少可以这么说。Suspic...
The timing of the gun was precisely synchronized with the turning of the plane's propeller.风门的调速与飞机螺旋桨的转动精确同步。The synchronized low - frequency rectifier is similar to a push - pull rectifier.同步 低频 整流器与推挽整流器相似.The vo...