For example, Grace had nobody to teach her when she first started, so she experimented with things like "rejuvenation water" and sugar cane juice. Not only did they taste nasty, you could never be sure that the products were safe or whether the supply would suddenly dry up.
比如她早期打「回春水」、「甘蔗汁」，因沒有人指導，既不好喝，還有安全、貨源供應的問題，覺得這樣難以持續，就毅然放棄。