body-building

n [U] strengthening the muscles of the body through exercise （通过锻炼）增强体质.

boatswain (also bo'sn, bos'n, bo'sun), bob, bob-sleigh, bobbin, bobble, bobby, bobby pin, bobtail, bod, bode, bodice, bodily, boding, bodkin, body, body clock, body language, body odour, body stocking, body-blow, body-snatcher, bodyguard, bodyline, bodywork, Boer, boffin, bog, bogey, bogged, boggle, boggle sb's/the mind, boggy, bogie, bogus, bogy (also bogey), bohemian, boil, boiled, boiled sweet, boiler,