岛礁区航行 navigation in rocky waters
灵山岛浅海岩礁区刺参 Apostichopus japonjcus
岛礁区
Reef area
以上为机器翻译结果，长、整句建议使用 人工翻译 。
东部岛礁区为西沙隆起的较高部位，海水较浅，基底之上直接覆盖礁相沉积地层。
The eastern reef island area, with shallow seawater, is higher parts of Xisha apophysis, where the basement is directly covered with reef facies carbonate rocks.
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