They weren't crying because of the communication barrier, they were crying because the man was deaf.

让他们落泪的并不是沟通障碍，而是那个人听不见的这个事实。

Initial concerns among respondents about disadvantages such as unstable internet, a distracting environment, and communication barriers all decreased after the six month trial.

在六个月的试验后，受访者最初对不稳定的互联网、分散注意力的环境和沟通障碍等缺点的担忧都有所下降。