1. Beyond the coral reef the open sea was dark blue.
    珊瑚礁之外的大海是一片深蓝色。

1. 礁：南海诸岛共230个岛、礁、沙、滩,按其离海面的位置可分为:滩(bank),位于水下较深的珊瑚,呈广阔的台状;暗沙(shoal),由滩向上生长,距水面较近;礁(reef),位于水面下高潮和低潮之间的珊瑚;砂洲(sand cay)和岛屿,露出水面之上,

2. reef：renewable energy equity fund; 成立

1. 礁;礁脉
    A reef is a long line of rocks or sand, the top of which is just above or just below the surface of the sea.

reef什么意思

    e.g. An unspoilt coral reef encloses the bay.
           未受破坏的珊瑚礁环绕在海湾周围。

1. one of several strips across a sail that can be taken in or rolled up to lessen the area of the sail that is exposed to the wind

2. a submerged ridge of rock or coral near the surface of the water

1. reduce (a sail) by taking in a reef

2. roll up (a portion of a sail) in order to reduce its area

3. lower and bring partially inboard

    e.g. reef the sailboat''s mast