lunt:IP address must be specified 是什么意思?/

IP address must be specified 是什么意思?/ what must be must be!什么意思！ must be是什么意思 can be,may be和must be Our bank ( the seller's bank) must be the counter bank.怎么翻译？ IP电话与IP Address You must be home at ....? can be与must be 的区别 The applicant's name must be clearly visible on the binding"on the binding"是指什么地方? As heaven's movenment is ever vigorous，so must a gentleman ceaselessly strive to be strong.