单词:fixed optics
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They Did It With Mirrors! You can’t stand in front of the paintings of the old masters and not wonder, how did 1) Frans Hals make that lace seem so real? How did 2) Van Dyck make his armor so gleami
Dialogue 5 (between customer and repairman) Laurance- How long do you think it'll take to fix it? Soony- Hard to tell. Sometimes we can find the problem right away and sometimes it may take an hour or
Newtons Apple Tree 牛顿的苹果树 Newton was an English physicist and mathmatician,and was the greatest scientist in his era. 牛顿是一位英国物理学家和数学家,也是他那个时代最卓越的科学家之一。 Isaac Newton was bor
Its a stunning location, but its also mysterious. These stars are not just close together. They are on the move at enormous speeds. Going to the heart of a galaxy might not be the similar to going to an amusement park. The rides are some similar to h
China's fixed-asset investment picks up pace BEIJING, Nov. 9 (Xinhua) -- China's fixed asset investment rose 20.7 percent year-on-year to 29.25 trillion yuan (4.64 trillion U.S. dollars) in the first ten months of 2012, the National Bureau of Statist