YOU SAID:

the sky outside the plane window was dull and gray

INTO JAPANESE

飛行機の窓の外の空はくすんでいて灰色でした

BACK INTO ENGLISH

The sky outside the plane window was dull and gray

INTO JAPANESE

飛行機の窓の外の空はくすんでいて灰色でした

BACK INTO ENGLISH

The sky outside the plane window was dull and gray