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In 1970, the Soviet Union put a laser reflector on the moon, carried by a rover. A few months later, it disappeared. Some speculated that the rover had fallen into a crater or parked in such a way as to render the reflector inaccessible. Now after 40
Scientific American(四)月
Having a Backup Plan Jerome: This is a very dangerous undertaking. Do you have a backup plan if anything goes wrong? Sandy: Itll work. Ive come up with contingencies for every possible setback. Jerome: Its just that Id like to know we have some recou
2014年ESL之日常生活
今天我们要学的词组是backup。作为形容词，backup的意思是后备，替代。媒体报道说，布什总统实施新的伊拉克计划之后，一些州长在白宫询问布什和参谋长联席会议主席Peter Pace有没有后备计划
英语每日一词
Gain - This is an increase in signal power, due to a boost from an electronic device. Garbage - These are unwanted characters that appear because of either incorrect settings or noise. Gate - These ar
电信英语
Bart's upstairs neighbor was driving him nuts. He made all kinds of strange noises at all kinds of strange hours. If I tell my neighbor he's noisy, he won't believe me, Bart thought. He'll believe me only if he lives downstairs and hears himself upst
英文短篇故事（纽约）
今天我们要学的词组是backup。作为形容词，backup的意思是后备，替代。媒体报道说，布什总统实施新的伊拉克计划之后，一些州长在白宫询问布什和参谋长联席会议主席Peter Pace有没有后备计划
英语单词荟萃