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once in a blue moon

adv.千载难逢地

难易程度:

once in a blue moon为短语/超纲词汇

近义词, 同义词

1. Even under a clear blue sky, the village looked forbidding, as all the houses were built of grey mud bricks.
    农舍全用灰色的土坯建成,因此,即使在晴朗的蓝天底下,村庄看上去也会令人感到难以亲近。

2. Earth looks like a big blue marble (玻璃球); from high above the Earth and from the moon, the planet gleams and shines.
    地球看上去就像一个巨大的蓝色玻璃球, 从高高的地球上空或从月球上望去,这颗行星熠熠生辉,闪闪发光。

3. Because the Moon has only an eightieth of the Earth´s mass,
    因为月球的重只有地球的1/8,

4. Because the gravity on the Moon´s surface is only a sixth of Earth´s (remember how easily the Apollo astronauts bounded along),
    由于月球表面的重力仅是地球表面的1/6 -- 还记得阿波罗飞船中的宇航员累松地跳跃 --

5. But while she was at college, my mother met my father, who was blue-eyed and yellow-haired and not Jewish.
    可是我妈妈上大学时认识了我爸爸。他蓝眼睛,黄头发,而且不是犹太人。

6. Watching the first man land on the moon, we beheld a sighy never seen before by man .
    看那踏上月球的第一人,我们看到了人类所未见的景象。

7. It requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth´s surface into orbit!
    因此,从月球到地球的25万英里所消耗的能量要比从地球表面进入地球轨道的200英里所耗能量少97%。

8. When that side of the moon on which the sun is shining is facing us, we see a round shining circle — a full moon.
    当月亮接受阳光照射的一面面向我们时,我们看到的是个发亮的圆盘——满月。

9. When the moon is like this, we call it a quarter moon.
    这时的月亮我们称之为半月。

10. We call this a new moon.
    我们称之新月。

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