Space dust may not sound very dangerous, but when even a tiny object is moving many times faster than a bullet, it can cause injury.とは 意味・読み方・使い方

Sharapova's shots are very fast but...a fast ball means that it will come back that much faster.

Sharapova's shots are very fast but ... a fast ball means that it will come back that much faster.

While pointed spikes stick deep in the ground and let the runner grip the ground firmly, the runner needs extra time and strength to pull them out.

The ball does not fly very fast, so it is easy to hit it back.

Kidney stones can be as small as a grain of sand or as large as a golf ball.

But light does not travel at the same speed through all materials; it goes slower through some than through others.

a person struck by a log as it was thrown onto a road could maintain trespass against the thrower but one who was hurt by stumbling over it could maintain and action on the case

You may be able to see Noguchi on TV spinning a top and making origami under the weightless conditions in space.

And yet the large blocks of stone are fitted together so closely that you cannot put in the point of a knife between them.

abnormally rapid heartbeat (over 100 beats per minute)

The powerful dredger easily removed the large boulders.

The sparks get bigger as he pedals faster.

Some people are killed by falling tiles

Falling tiles will kill people.

The aerogel made it possible to gently catch particles traveling at high speeds.

Flying faster than sound was long thought to be beyond human achievement.

an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation-LewisMumford

A swallow flies very swiftly.

Swallows fly very fast.

However fast you may try to run, you will never beat a motorbike.

Confetti may obstruct the game if a great amount is thrown, so it has also been banned.

This type of robot can move faster than a robot with two legs.

While light waves travel most quickly through air, they go slower through water and even slower through glass.

squash can be dangerous if your opponent has a long follow-through

The speed of an airplane is much greater than that of a helicopter.

Though Jane is not a good runner, she can swim very fast.

Keep away from the backstreets where hoodlums hang around.

Protons were accelerated to nearly the speed of light inside the Large Hadron Collider.

The rocket travels at a tremendous speed.

the faster a jet plane goes the greater its propulsive efficiency