comfortable是修饰baby的,lay sth. adj.把...安顿得怎么样,句型类似于make sth. adj.
comfortable 为常用词, 多含“(使身体)舒适的”、“安逸的”之意, 如:I feel very comfortable in this chair. 坐在这张椅子里, 我感到非常舒服。cosy主要指“温暖而舒适的”、“安逸的”, 含“带热情或友情, 使之舒适而满足的”意思, 如:a cosy room. 一间温暖、舒适的房间。snug指“地方虽不大, 但舒适而安全的”, 如:The cat found a snug corner behind the stove.猫儿在炉后找到一块舒适而暖和的地方。restful指“宁静的”、“(使感到)平静的”, 如:It's restful to sit on the beach, watching the gentle lapping of the waves. 坐在海滩看海浪轻拍, 令人感到心旷神怡。