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reef
B1
noun
Sử dụng:
95%
coral formation, rocky ridge
Tương ứng: coral formation, rocky ridge
Phát âm: /riːf/
Ý nghĩa: a ridge of coral or rock near the surface of the sea

This meaning refers to an underwater or partly exposed natural formation in shallow water.

Colorful fish live around the coral reef.

The ship struck a hidden reef.

2
C1
verb
Sử dụng:
24%
shorten sail, reduce sail
Tương ứng: shorten sail, reduce sail
Phát âm: /riːf/
Ý nghĩa: to reduce the area of a sail exposed to the wind

In sailing, reef means folding or securing part of a sail to reduce its size in strong wind.

The crew reefed the sails before the storm.

They reefed the main sail as the wind strengthened.

reef
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