【明報專訊】◆On a shoestring

If you do something on a shoestring, you do it without spending much money.

e.g. He lived on a shoestring for years until he got a good-paying job.

◆Step into someone's shoes

Take control of a task or job from another person.

e.g. The young man has been trained to step into his father's shoes when he retires.

◆(As) tough as old boots

Very strong, and not easily made weaker.

e.g. He might be in his eighties but he's tough as old boots.

[Smarties' Power English 第237期]