must-see

We must see the reverse as well as the obverse side of things.

"我们既要到事物正面,也要到事物反面。"

We must see that there is no gap in our defence.

我们必须确保我们防御没有漏。

The government must be seen to be whiter than white.

政府必须让自己上去公正廉洁。

(humorous) Tom’s washing the dishes—I must be seeing things!

汤姆在洗碗——我肯定是花眼了！

This means that the way in which denture teeth occlude must be seen dynamically, and not just as a static relationship when in maximum interdigitation.

这意味着，义齿咬合方式必须作为态过程，而不仅仅是最大牙尖交错牙合时静态关系。