When and by whom were the watches or clocks 1 ? Perhaps nobody knows. How could we tell time if there were no watches or clocks anywhere in the world? The 2 was probably the world's first “clock", except in the far north, where the Eskimos live. There, it's dark most of the ...
A.styles B.size 1.Most things in your school bags are made in C.color D.bills A.home B.factories 2.-When the bridge C.school D.restaurant -Last year. 2.The inventors invented these things because A.did;build B.was;build A.their children were at school C.was;built D.did;built B...
【题目】 How did people tell the time before clocks were invented? At first, the ancient people looked up at the sun and could tell it was the middle of the day when the sun was directly overhead in the sky. They also knew when it was morning or evening. Later, the Egyptians used ...
【题目】 How did people tell the time before clocks were invented? At first, the ancient people looked up at the sun and could tell it was the middle of the day when the sun was directly overhead in the sky. They also knew when it was morning or evening. Later, the Egyptians used ...
was it serious was it the home the c was machen ue v was made from the lov was no life i defy was notwas in the moo was one of a kinda pr was quite at odds wit was upon the table was willing to resign was work analysis she was were born wasabia pungens matsu wash header wash...
aWhen they brought the clocks together and made a comparison, the clock on the plane was indeed a few nanoseconds slower than the other clock. 当他们带来了时钟并且做了比较,时钟在飞机上比另一个时钟的确几纳秒慢。[translate]
When and by whom were the watches or clocks 1 ? Perhaps nobody knows. How could we tell time if there were no watches or clocks anywhere in the world? The 2 was probably the world's first “clock”, except in the far north, where the Eskimos live. There, it's dark most of the...
When Jimmy 1 a boy he always liked watches and clocks very much. When he was eighteen years old he went into the army(军队), and he began to teach himself 2 watches. A lot of his friends brought him 3 watches, and he mended them for them. Then his captain(上尉) heard about this...
Mechanical clocks became more accurate when small springs(发条) were added to move the hands of the clock.As a result of this invention, clocks became smaller and for the first time, watches were built using this spring system.Over the next 300 years, clocks and watches became cheaper. Soon...
Then the Egyptians made a sundial about 3,500 years ago. It was smaller than the sun clock and could let people know the time for half a day. On cloudy days or at night it was impossible to tell the time with a sun clock or a sundial. Water clocks were the first clocks not to ...