Sister-in-law said she couldn't get away from work. If it were you, you wouldn't take a temporary leave to eat. This will leave a bad impression on your superiors, and people will say thank you politely. Let's not haggle over every ounce and say, "then I won't disturb your work." Let's make an appointment next time. "

In some areas, a sister-in-law generally refers to a younger brother's wife, or a brother's wife who has a particularly good relationship with him (younger than himself, of course, otherwise it is called a sister-in-law), that is, a sister-in-law. Sister-in-law and sister-in-law basically mean the same thing, but in some contexts, "sister-in-law" can mean "younger brother and sister", for example, "I have parents over 60 years old, and I have a minor sister-in-law ..." This is the difference between sister-in-law and sister-in-law.