Reef flat, reef crest and reef front margin can be recognized in the reef core facies.

礁核相包括礁坪带、礁冠带和礁前缘带。

youdao

Then we go to a small island with a coral reef 'in front of it. The friends of snorkeling will have again a great joy.

然后我们前往一小岛，在岛的前面有一珊瑚礁，喜欢潜水的朋友呢，会再次感到开心高兴。

youdao

The river for building the delta was characterised by low velocity, high discharge, high concentration of fine clay and sand, and associated with reef (shoal) in delta front.

该三角洲沉积的特征是入海河流流速低而流量大，泥沙含量高而粒级细小，在三角洲前缘伴生有生物礁(滩)。

youdao