Ученые провели опыты над кроликами.

Ученые провели опыты над кроликами. Один из них вёл здоровый образ жизни, а другой дышал сигаретным дымом.
И один из кроликов который вёл здоровый образ жизни больше не вернулся в лабораторию, а другой который дышал сигаретным дымом вернулся, потому что ему нужна была доза сигаретного дыма.

Результаты (английский) 1:

Scientists have conducted experiments on rabbits. One of them led a healthy lifestyle, and other breathing cigarette smoke. And one of the rabbits who led a healthy lifestyle never returned to the lab, and the other which breathes cigarette smoke back because he needed a dose of cigarette smoke.

Результаты (английский) 2:

Scientists have conducted experiments on rabbits. One of them led a healthy lifestyle and other breathing cigarette smoke.
And one of the rabbits who led a healthy lifestyle never returned to the lab, and the other who was breathing cigarette smoke came back because he needed a dose of cigarette smoke.

Результаты (английский) 3:

scientists conducted experiments on rabbits. one of them was a healthy way of life, and the other, inhaling cigarette smoke.and one of the rabbits which had a healthy lifestyle never came back to the lab, and the other of which inhaling cigarette smoke back, because he needed a dose of cigarette smoke.