famous clock appeared on the cover. Since then, the clock has moved forward and back by its founder... on the nuclear clock — the world is right back where it started: seven minutes before midnight.The clock ……

. As we all know, there are already three dimensions－the up-down, side-to-side, forward-back dimensions...你知道吗，科学界还有很多未解的难题呢。SCIENCE is moving forward at a record pace, but there are still some basic ……

, there are already three dimensions. They are the up-down, side-to-side and forward-back dimensions. We... be moving forward more quickly than ever before, but a few important questions still haven't been answered ……

(or you can hold the right mouse button and slide forward and back). Tilt To tilt and pan your view... and slide forward and back). Tilt To tilt and pan your view, click and hold the middle mouse button ……

it both forward and back. Many people like it. But the police don’t let it go on the road, because.... The car has two engines (引擎) and two steering wheels (方向盘). You can drive it both forward ……

dimensions. They are the up-down, side-to-side and forward-back dimensions.as we all know 或者as it is known ……

by waving the remote like a real tennis racket. You swing (挥动) your arm forward or back to send a tennis ……

gives me direction and drives me forward.”Back in China, the teenagers quickly threw themselves back....“I do well in defense, so my duty is to stay back in the field to protect areas that are left open ……

a home which gives me direction and drives me forward.”Back in China, the teenagers quickly threw...大化) their potential.“I do well in defense, so my duty is to stay back in the field to protect areas ……

-to-side, forward-back dimensions.6. In the first 20 days of May, pork wholesale (批发的) prices have gone ……

a question of riding forward on the back of ideas that I feel passionately about," he wrote on his ……

more a question of riding forward on the back of ideas that I feel passionately about." Can you... for other people carry him forward. In Chinese, the sentence is "现在我并不是在逃离英格兰，而是在追随着让我充满激情的生活". ……

, then back again, unsure if he should join the conversation.6. Peter stepped forward, then back again.... Sam paced back and forth, unable to make a decision.3. Sam paced back and forth, unable to make ……

demonstrate the new controls. In tennis, for example, you can swing your arm forward or back to send ……

, forward-back dimensions we live in every day.Our understanding of time, Einstein said, is based ……