Arcturus has already passes its highest point in the evening at this time of year and is slowly descending to the west.

今年的此时的夜晚，大角星已经位移至它的最高点，并开始缓慢地向西移动。

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This will involve some daring, with the aircraft spending all day climbing as its batteries are recharged and then descending slowly under power throughout the night to conserve energy.

这还是真的需要些胆量才行的，飞机在白天电池充电时会一直爬高，而到了晚上为了节省电力会一直不断地缓慢下降。

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I slowly press down the automatic descending system, lowers towards the luminescent spot.

我缓缓地按下自动降落的系统，朝亮点降下去。

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By the end of the 13th century, Italian engineers were building large mechanical clocks inside towers, driven by slowly descending weights.

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This will involve some daring, with the aircraft spending all day climbing as its batteries are recharged and then descending slowly under power throughout the night to conserve energy.

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The Pope, who is turning 81 this month, looked frail as he arrived in Athens on Friday morning for the 24-hour visit, descending the steps of his plane slowly but unaided to be greeted by a Greek Air Force honour guard.

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