久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

整個地球可以想像為一塊碩大無朋的磁石.The earth may be thought of as a gigantic magnet.她能像磁石般吸引劇院觀眾.She can magnetise a theatre audience.某些金屬受磁石的吸引.Certain metals are attracted to a magnet....

“磁石”的拼音為：cí shí...

“磁石”的英語可以翻譯為：[礦] [中藥] magnetite，lodestone，[電] magnet ...