Our travel agency now offers guided summer tours across the Alaskan tundra for small groups.

我們旅行社現在提供小團體夏季導覽行程，帶您穿越阿拉斯加凍原。

The shipping company had to delay deliveries because heavy snow covered the tundra roads.

由於大雪覆蓋凍原上的道路，貨運公司不得不延後送貨。

During the meeting, the director proposed funding a research station on the Arctic tundra.

會議中，主任提議資助在北極凍原上設立研究站。