I wrote the letter at his dictation.我照他的口述写信.He had had an arm amputated and relied on her to take down his books from dictation.他的一只胳膊截掉了，只能口授书的内容让她来记录。The new secretary takes dictation very well.那位新秘书善于记录口授.She is tran...
the first ascent of Mount Everest首次攀登珠穆朗玛峰The top of Mount Everest is the most inaccessible place in the world.珠穆朗玛峰是世界上最难到达的地方.Climbing Mt. Everest is anything but a pleasure trip.登圣母峰绝不是一次轻松的旅途....
Formant: it uses the estimation of the overall shape of the spectrum's amplitude envelope.共振峰: 使用了对频谱的振幅包络线的大体形状所作的估计....parties competing across the political spectrum...政治纷争中的各党派However , the noise spectrum of the...