[网络] 背链 backchannel: (传递消息的)秘密渠道,特殊途径 backchaining: [网络] 逆向组句法;反向结构;倒装训练 backchannelled: [网络] 反向推荐 backchained: [网络] 背链 backchannelling: [网络] backchanneling 下载手机词典可随时随地查词查翻译