At school he is also taught things like refusing to accept second-hand smoke, not using disposable tableware, wearing simple, undyed clothing, creating as little unnecessary garbage as possible, and so forth. When these actions become a habit of life, they are unconsciously and very naturally put into practice day by day.
在他的學校也有這樣的課程，比如拒抽二手菸，拒用免洗餐具，穿簡單、不染色的衣服，儘量不製造無謂的垃圾等等，這些成為生活習慣後，不知不覺也就很自然地在生活實踐起來。