《苦痛》(a) pain; suffering; 《困苦》hardship(s); (a) difficulty; 《心配》anxiety; worry; cares. ??になる be anxious [worry] ((about)); 《事が主語》weigh on one's mind. ??にする worry ((about, over)). ??にしない take it easy. ??もなく easily; with ease. ?は楽の種 No pain(s), no gain(s).