準じゅん光こう速そく

noun

near-light speed; sub-light speed

Technical term used in physics and science fiction to describe speeds approaching but not reaching the speed of light.

• 準じゅん光こう速そくで移い動どうする宇う宙ちゅう船せんの設せっ計けいは、まだ理り論ろん上じょうの課か題だいだ。

  Designing a spacecraft that travels at near-light speed is still a theoretical challenge.

• 準じゅん光こう速そく粒りゅう子しの挙きょ動どうをシミュレーションする。

  Simulate the behavior of particles at sub-light speed.