您要查找的是不是：
- 下測鈾窄道Uduranium narrow channel in downward window (Ud)
- 上測鈾窄道Uuuranium narrow channel in upward window (Uu)
- 下測鈾寬道Udwuranium wide channel in downward window (Udw)
- 下lower
- 下一next
- 道method
- 一下(adj) one time; once
- 查找下一個find next
- 下的subaltern
- 窄narrow
- 下一個next
- 要使用這艘大船從岩石之間的一條窄道通過是需要高超技術的。It takes a lot of skill to sail a big ship through such a narrow passage between the rocks.
- 一道together
- 測井well logging
- 鈾uranium(U)
- 下頁overleaf
- 偵測sense
- 有道have attained the Way; be accomplished in the Way
- 下周next week
- 上下up and down
