1. His introduction to fieldwork was a series of expeditions. 他初次参加的实地考察工作是一系列的探险活动。
2. Elizabeth I funded two mining expeditions. 伊丽莎白一世资助了两次采矿探险。
3. But astronomers laboured hard to analyse the results of these expeditions to observe Venus transits. 但是天文学家辛苦分析这些观测金星凌日的探险活动的结果。
4. One can trace such expeditions back to ancient Sumeria, the earliest known Middle Eastern civilization. 这样的探险可以追溯到古苏美尔时期，这是已知的最早的中东文明。
5. Poultries need a large amount of food and space, which is typically limited to expeditions, and they produce a lot of excrement. 家禽需要大量的食物和空间，这在远征中通常是有限的，而且它们还会产生大量的排泄物。
