that is (to say)

MEANINGused to give more exact information about something or to correct a statement 亦即，那就是说，换句话说

One solution would be to change the shape of the screen, that is, to make it wider.

有一个方法，就是改变屏幕的形状，或者说，把屏幕加宽。

Languages are taught by the direct method, that is to say, without using the student’s own language.

语言教学使用直接教学法，也就是说，不用学生的母语。

I loved him – that is, I thought I did.

我当时是爱他的——或者说，我以为我是爱他的。

Examples from the Corpus

that is (to say)• Could you describe the current selling collection hanging out there in a gallery that is also your front room?• But it is not a dream that is likely to come true, though perhaps not for the obvious reason.• You won't convince me that the answer to that is necessary for your enquiry.• I look to the current discussions, and also to the United States, to give the ground that is needed.• First, that is not so.• Scientific knowledge is not proven knowledge, but it does represent knowledge that is probably true.• A standard of service that is second to none, with a speed and quality guarantee for all repairs.• One solution would be to change the shape of the TV screen -- that is, to make it wider.• Uncomplicated computer interface that is truly easy to use.

→ that is (to say) at that1(3)