to be in one element 如鱼得水
英文释义
To be doing something in which one has natural abilities and therefore is able to do one best.
例句
My son loves computers, and so when he joined an innovative new software company, he was really in his element and enjoyed going to work everyday.
我儿子喜欢计算机,所以当他加盟一家新成立的创新软件公司,真可谓如鱼得水,天天高高兴兴地去上班。