@jillneimark @CRBoxKits @LazarusLong13 @jasmith_yorku @nickelpin Shaving is obviously the "official" recommendation but there are a couple of studies showing that if it's trimmed short and the respirator is tight enough, still a good seal.
@jillneimark @CRBoxKits @LazarusLong13 @jasmith_yorku @nickelpin 剃须显然是“官方”建议，但有几项研究表明，如果修剪得短且呼吸器足够紧，仍然可以很好地密封。