“occasional”意思比较单一，是“偶尔的”，常用、好用，值得掌握
副词occasionally
同义词 sometimes, from time to time, every now and then
例句
1、Johnny Chan is a formidable poker player and only loses very occasionally.
2、Although I am well traveled, I have mostly visited different parts of my own country. I have traveled abroad only occasionally.
3、He occasionally regretted the shame he had brought on his family, but for his victims and their relatives he felt nothing.
翻译
Lucy is good at painting landscapes pictures , but occasionally she painting oils .
例句
Recently I have had an occasional tinnitus.
