我喜欢在下午喝一杯暖暖的路易波士茶，它天然不含咖啡因。

I enjoy a warm cup of ___rooibos in the afternoon as it's naturally caffeine-free.

这种植物生长在南非的山区，是制作草本茶的原料。

The ___rooibos plant grows in the mountainous regions of South Africa and is used to make herbal tea.