这个包是用优质皮革制成的。

This bag is made of ___premium leather.

我的健康保险每月保险费很高。

My health insurance ___premium is quite high every month.

这家航空公司为早鸟票提供20%的额外折扣。

This airline offers a 20% ___premium discount for early bird tickets.

这所学校高度重视学生的自主学习能力。

This school places a ___premium on students' independent learning abilities.