我们通过磁铁的作用知道磁性是怎么一回事.We know about magnetism by the way magnets act.他用磁铁捡起了所有的大头针.He picked all the pins up with a magnet.极性是磁铁的固有性质.Polarity is inherent in a magnet....
Illogically, I felt guilty.我无缘无故地有种负罪感。" I don't know, " returned Carrie, still illogically drifting and finding nothing at which to catch.“ 我不知道, " 嘉莉回答.她思绪仍然很乱,游移不定,不知如何是好.Illogically, she had expected some kind o...
Speakers are sold as add-ons for personal stereos.扬声器作为随身听的附加装置出售。Stereos have been the ordinary household products.立体声音响装置已经成为普遍家庭用品.Our video recorders, stereos, and TVs are all quality products.我们的录音机 、 立体声音响和电视机都是好产品...