YOU SAID:

Luis is really good at track because he is very fast.

INTO JAPANESE

ルイスはとても速いので、トラックは本当に得意です。

BACK INTO ENGLISH

Lewis is so fast, he is really good at trucking.

INTO JAPANESE

ルイスはとても速いです、彼はトラック輸送が本当に得意です。

BACK INTO ENGLISH

Lewis is so fast, he is really good at trucking.