Backchannel
（傳遞消息的）秘密渠道, 特殊途徑
??? 情景例句
Oh yes.
你好。
Kindness is the golden chain by which society is bound together.
善良是連結社會的金鏈。
for their house, which had sound foundations, would have stood stoutly even if it had been almost submerged.
因為他們的房子地基牢固，即使洪水幾乎滅頂也不會倒塌。