must-see

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

在洗碗——肯定是看花眼了！

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

"既要看到事正面,也要看到事反面。"

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

必须确保防御没有漏洞。

The government must be seen to be whiter than white.

政府必须让自己看上去公正廉洁。