It's fun! Look at the fun we're having. 多有趣啊,看我们玩的多起劲儿
She's had her fun, now put an end to it. 她也玩够了,该结束了
It may look like fun but this is serious training for the task ahead. 可能看起来很好玩, 但这都是为马上来临的严峻挑战所做的训练
and appear to do this just for fun. 而它们这么做似乎只是因为好玩