这种清漆含有乳香树脂，使其更加耐用。

This varnish contains ___mastics to make it more durable.

工人们用密封胶填补了浴室瓷砖之间的缝隙。

The workers filled the gaps between the bathroom tiles with ___mastic.

这种来自乳香黄连木树脂的口香糖在希腊很受欢迎。

This ___mastic gum from the mastic tree resin is very popular in Greece.