Law of Cat Inertia: A cat at rest will tend to remain at rest, unless acted upo…
A cat at rest will tend to remain at rest, unless acted upon by some outside force - such as the opening of cat food, or a nearby scurrying mouse.
remain - оставаться;
unless - если не; пока не;
scurry - бежать стремглав; нестись
Источник: study.ru