1·There is a broad substratum of truth in it.
这其中有广泛的事实做基础。
2·The story has a substratum of truth.
这故事有事实的基础。
1·After cable duct construction, the Permit Holder shall reinstate the affected stream bed of Ho Chung River to its original conditions using natural substratum.
在电缆管道建成后,许可证持有人须用天然底土修复受影响的蚝涌溪流河床,使其回复原貌。