1. This shaft's been descending rather steeply for over 200 metres.

竖穴很险峻 向下延伸了 超过两百米

2. Further east, the odds of a castaway making land drop steeply as the islands become fewer and even more isolated.

再往东去 漂流者登陆的机会越发渺茫 因为这里的岛屿更少 且更加孤绝荒僻

3. It is, in fact, a huge mountain hidden beneath the waves and rising steeply from the seafloor 2,400 metres below.

事实上 它是隐藏在海浪下的一座高山 从2400米的海底拔地而起

以上参考资料就是本英汉词典详细汇总的单词steeply的翻译英语含义，如有错漏请向我们提供反馈意见。