Analysis: Dumbbell, English name, is an auxiliary equipment for weightlifting and fitness. Smaller than a barbell. The weight of the light dumbbell is 1, 2, 3, 5, 8, 12 lb, 1 lb =0.4536 kg) and so on. The weights of heavy dumbbells are 10, 15, 30 kg, etc. Because there is no sound during practice, it is named dumbbell.

A similar brain teaser:

1, salary can't be drunk. Salary: Also called salary, salary, salary. In the army, the police call it salary. Modern people call it salary. Because they are all working class, they are called wages.

2, perfume can not be drunk. Perfume: it is an alcoholic solution of essence, plus a proper amount of fixative. It has a rich fragrance, and its main function is to spray it on skirts, handkerchiefs and hairlines, giving off a pleasant fragrance. It is one of the important cosmetics.

3, bitter water can not drink. Bitter water: refers to bitter water, which can also be compared with suffering.