她坚持健身三个月后，又开始懈怠，现在整天躺在沙发上。

After sticking to her workout routine for three months, she became a ___backslider and now lounges on the couch all day.

她曾经是个虔诚的信徒，但现在成了个背离信仰的人。

She used to be a devoted believer, but now she's become a ___backslider.