The given statement is true.
A bulbourethral gland, also known as Cowper's gland, is one of the two small exocrine glands found in the male mammal's reproductive system. At the time of sexual arousal, the glands generate a mucus-like fluid known as pre-ejaculate.
The pre-ejaculate fluid is a clear, viscous, and salty liquid, which counterbalances any of the residual acidity in the urethra. The neutralized urethra offers a friendlier surrounding for the entry of the sperm.