Dr Molette's ducks were all treated similarly, and their livers were of more or less the same size (certainly, the fat-shedding ones were not systematically heavier).

莫里特博士的鸭子们都是在相同环境下饲养的，它们的肝脏大小也差不多(那些会流失油脂的肝脏并没有更重些)。