20. There is a dark side of the moon
月亮有一个黑暗面
As the Moon is constantly rotating on its own axis, there is no area of the planetoid which is in permanent darkness.
当月亮以它的轴为中心不断旋转时,没有哪个区域会在永恒的黑暗中。
21. A toilet's flush will change direction depending upon which hemisphere it is in
马桶的冲水方向会改变,这取决于它在哪一个半球
The real cause of 'backwards'-flushing toilets is just that the water jets point in the opposite direction.
“向后”的真正原因仅仅只是冲洗厕所的水柱指向相反的方向。
22. Mars is red
火星是红色的
The red colour we see in images of Mars is just the result of iron rusting.
我们看到的红色火星图像只是铁生锈的结果。
23. Sunflowers track the sun across the sky
向日葵追着太阳生长
A common misconception is that sunflower heads track the sun across the sky when in full bloom. The uniform alignment of the flowers does result from heliotropism in an earlier development stage, the bud stage, before the appearance of flower heads so technically they follow the sun before they have bloomed, not after.
一个常见的误解是向日葵盛开时花盘会跟着太阳转动。向日葵在萌芽阶段还没长出花盘时就已经具有向日性了,所以从技术上讲,它们在盛开前就已经追着太阳生长了,而不是盛开后才追着太阳生长。
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