Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
收帆；卷帆
reefed — past of reef
先理解核心含义，再看它在真实句子里的用法。
收帆；卷帆
To reduce the area of a sail by folding or rolling up part of it, so that it suits the strength of the wind.
Before the storm hit, the crew quickly reefed the mainsail to reduce the sail area.
暴风雨来临前，船员们迅速收起了主帆以减少受风面积。
收帆；将帆的一部分卷起以适应风力
To take in part of a sail in order to adapt the size of the sail to the force of the wind.
将明轮叶片向中心移动以减少吃水深度
To move the floats of a paddle wheel toward its center so that they will not dip so deeply.
reef
Base
原形
reefs
3rd person
第三人称单数
reefing
-ing
现在分词
reefed
Past
过去式
reefed
Past participle
过去分词
We reef the sails before the storm arrives.
我们在暴风雨来临前收起船帆。
The crew reefed the mainsail as the wind strengthened.
风变大时，船员们收起了主帆。
They have reefed the sails to reduce the pressure on the mast.
他们已经收起船帆以减少桅杆的压力。
规则动词；常用于航海语境。
The captain told us to reef the jib because the wind was getting stronger.
船长叫我们收起船首三角帆，因为风越来越大了。
When sailing in strong winds, reefing the sails early can keep the boat stable.
在大风中航行时，及早收帆能让船保持稳定。
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发长 /iː/ 音 (如 see, free)
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Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.