Although my parents were very worried about leaving me, they had to go away on business for a few days.

虽然我父母非常担心留下我，但是他们必须出差几天。

youdao

On the other hand, we could have walked away and allowed two major auto companies to go out of business - which could have wiped out one million American jobs.

另一方面，我们可以不管不问，让两家最大的汽车公司关门歇业——这将导致一百多万美国人失业。

youdao

Father had to go away suddenly on business, and mother had gone away to stay with Granny, who was not very well.

NPR: Excerpt: 'Five Children and It'

Another option is to go full out on the side business right away but for a set period (say six months) and then review at that point whether to continue as is, dial down, ramp up or quit one or the other.

FORBES: Balancing A Job and Side Business, Part 1: Time and Energy