He looked happy and carefree.
他看起来轻松愉快。
a carefree attitude/life
轻松自在的态度；无忧无虑的生活
1.无忧无虑的,快活的
1.happy and without any worries, problems, or responsibilities
1.Simultaneously, we got to watch Olivia fall under the spell of Fauxlivia's carefree life and the joy it brought to her for a time.
同时我们也看到在一段时间内，Olivia甲也为Olivia乙那无忧无虑的生活及其带给她的快乐深深着迷。
2.All of it has been constructed to produce a carefree day of entertainment by amusement park master planners.
设计一个游乐园时，要先计算其日平均接待游客的数量。
3.Carefree life of a 16-year-old Inga is broken off with the news of her mother's fatal illness.
16岁的英嘉曾经一个无忧无虑的女孩，直到她母亲身患绝症后。
4.then he went on his way, and was cheerful and carefree, and lived one day at a time.
然后他愉快地走了，无忧无虑地生活着。
5.When we finally got to the boat and I snapped that carefree, disheveled picture of Matt, it marked both an end and the beginning.
最后，在上船以后，我拍下了那张既标志着结束又象征着开始的照片。照片上的马修头发乱糟糟的，一副无忧无虑的样子。
6.In ot her words, he made a dramatic shift in his perspective from carefree to preventing pain by avoiding losses.
换句话说，他通过把自己的观点从无忧无虑改变为避免亏损以防止痛苦。
7.The sky is blue is true blue, as if they can feel the hand of the silk blue slip from between your fingers, giving a carefree state of mind.
天空是蓝色的，是真正的蓝色，好像伸手便可以感受到蓝色的绸缎从手指间滑过，给人一种畅快的心境。
8.I finished writing assignments, carefree get boring, sat down on the sofa watching on television to with relish.
我写完了作业，闲得无聊，就坐在沙发上津津有味看起电视来。
9.Through the song, let me feel once again as if a child who returns to the carefree childhood, so I love this song.
通过这首歌，让我仿佛又再一次回到了小时候那无忧无虑的童年时代，所以我很喜欢这首歌。
10.Miss the beginning of childhood, when our carefree swing, and each time seems to fly Dangqi swing very far far away.
开始怀念童年，那时的我们无忧无虑的荡秋千，每一次荡起都好像可以飞到很远很远的地方。