翻译和例句：
信不信由你Astronauts can’t cry properly in space because there’s no gravity (重力) to make tears fall. ……
A black hole has strong gravity (重力). If you fell into a black hole, you would stretch out (拉成) like spaghetti (意大利细面条). ……
in zero gravity (重力). Do you want to stay in the hotel? ……
in the air. Why? 乒乓球有一定的重量，受重力影响会下落。吹风机的风作用于乒乓球，会产生向上的推力，在某个距离重力和推力达到平衡,这时球就浮住了。Try it Can you float more ……
. The sensors (传感器) inside help them do this. These sensors know the center of gravity (重力). More than.... The sensors (传感器) inside help them do this. These sensors know the center of gravity (重力). More than ……
(重力). ……
, there’s no gravity (重力), so everything floats (漂浮). Imagine what would happen if the toilet stopped working! ……
不可思议的叠石高手。HOW can the stones in the picture stand on one another without being stuck (粘起来)? Canadian artist Michael Grab is a master of balancing (平衡) stones. His magic power is gravity (重力 ……
不可思议的叠石高手。HOW can the stones in the picture stand on one another without being stuck (粘起来)? Canadian artist Michael Grab is a master of balancing (平衡) stones. His magic power is gravity (重力 ……
up of many small water droplets (小滴). The water droplets are so small that gravity (重力) can’t pull ……
knowledge (常识)。Worldzero gravity living零重力生活Orion Span, a US-based company, recently announced it would... for 12 days. 除了zero gravity living，“零重力生活”也可用weightless living表示。 ……
, a gravimeter (重力仪), snow-depth radar and a meteorological (气象学的) measuring instrument. This year marks... the mountain. They used a global navigation (导航) satellite system receiver, a gravimeter (重力 ……
after year because of gravity (重力). This is why older people sometimes have bigger noses and ears... in our ears and noses. In addition, our earlobes become bigger year after year because of gravity (重力 ……
flight suit (飞行服). It will act as a zero-gravity indicator (零重力指示器). When the rocket escapes Earth... (零重力指示器). When the rocket escapes Earth’s gravitational pull (地心引力), the Snoopy doll will float ……
.Scientists are studying how microgravity (微重力) affects (影响) the flowering time of plants. The plants... new seeds. The test is the first of its kind.Scientists are studying how microgravity (微重力) affects ……
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