YOU SAID:
My sister sings incessantly
INTO JAPANESE
私の妹は絶え間なく歌います
BACK INTO ENGLISH
My sister sings constantly
INTO JAPANESE
私の姉は絶えず歌います
BACK INTO ENGLISH
My older sister constantly sings
INTO JAPANESE
私の姉は絶えず歌います
BACK INTO ENGLISH
My older sister constantly sings
Come on, you can do better than that.