But having a cardboard cutout is no substitution for having a real six pack.

但是，纸板剪纸并不能替代真正的六块腹肌。

She has been actively engaged on the phone, but sometimes, there's no substitution for showing up, as the secretary herself likes to say, for talking face to face.

她一直积极的通过电话联系, 但有时, 没有替代者出现, 正如国务卿本人喜欢说的那样, 为了面对面交谈。

Again, going back to the mobile phone, you can buy a package and it's a fixed price;you can't make any changes to it, no substitutions, no add-ons, no extra features, etc.

好，我们现在回到电话上来，你可以买个套餐，然后价格固定；套餐内容你也不能改，不能增加，删减和私人订制。