词语解析：迟钝
📚 基本释义
1. 反应迟缓
他反应迟钝，跟不上大家的节奏。
His slow reaction couldn't keep up with the group.
His slow reaction couldn't keep up with the group.
2. 思维不敏捷
老人年纪大了，思维变得迟钝。
The elderly man's thinking became dull with age.
The elderly man's thinking became dull with age.
3. 感官不敏锐
这种药物会使触觉变得迟钝。
This medication makes the sense of touch blunt.
This medication makes the sense of touch blunt.
💡 顾老师提示："迟钝"可以形容反应、思维或感官，在不同语境下需要选择恰当的反义词。
🔄 反义词解析
1. 灵敏（反应）
猫的反应非常灵敏。
Cats have extremely acute reactions.
Cats have extremely acute reactions.
2. 敏锐（思维）
这位记者有着敏锐的洞察力。
This journalist has keen insight.
This journalist has keen insight.
3. 机敏（应对）
他在危机中表现得很机敏。
He showed quick-witted responses during the crisis.
He showed quick-witted responses during the crisis.
4. 敏捷（动作）
运动员的动作十分敏捷。
The athlete's movements are very nimble.
The athlete's movements are very nimble.
使用场景：
- 形容反应：灵敏/敏捷
- 形容思维：敏锐/机敏
- 形容感官：敏锐/敏感
🔍 近义词对比
1. 迟缓 - 强调速度慢
他行动迟缓，总是最后一个到。
His sluggish movements always make him the last to arrive.
His sluggish movements always make him the last to arrive.
2. 愚钝 - 强调智力不足
这个学生理解能力有些愚钝。
This student shows some dull-witted comprehension.
This student shows some dull-witted comprehension.
3. 呆滞 - 强调缺乏活力
他目光呆滞地看着前方。
He stared ahead with glazed eyes.
He stared ahead with glazed eyes.
💡 顾老师辨析：
- "迟钝"是中性词，"愚钝"带贬义
- "迟缓"多指行动，"呆滞"多指表情或状态
- 反义词要根据具体语境选择最贴切的表达
📝 随堂练习
1. 找出下列句子中"迟钝"的反义词：
"这个雷达系统非常( )，能探测到最微弱的信号。"
（答案：灵敏）
（答案：灵敏）
2. 选择正确的反义词填空：
侦探需要(敏锐/敏捷)的观察力来发现线索。
（答案：敏锐）
体操运动员的动作必须(灵敏/机敏)才能完成高难度动作。
（答案：灵敏）
3. 改错：找出使用不当的反义词
原句：他对市场变化反应很机敏。
修改：他对市场变化反应很敏锐。
（"机敏"多指应对能力，"敏锐"更适合形容感知能力）