Sign language is the mother tongue of deaf people, and the "first language" they acquire naturally.
手语是聋哑人的母语,是他们自幼在最自然的状态下习得的第一语言。
2
There were stagnant blood sign or grayish complexion, stagnated blood under skin, dark-purple tongue and sunken and astringent pulse in AIDS patients after observing the thousands of AIDS patients.