1. Who is the sender?
    谁是发信人?

2. This position gives off "stay away" signs and prevents your main "sign sender" (your mouth) from being seen by others looking for inviting conversational signs.
    这个姿势发出的信号是“离远点”，使得别人看不见你的主要“信号发送器(嘴)”，而他们正在寻找吸引其交谈的信号。