Difficult to reduce是什么意思？

• 参与者英文
• monitor
• banger
• repeat
• 解决方案英文
• general
• firmness
• candy
• 确认英文
• cheese
• 造型的英文
• dragon
• maths
• neck
• reveal
• prompt
• 参数英文
• default
• ticket
• predict
• profile
• tomato
• lesson
• various
• ultra
• approaches
• permitted
• rice
• cloud
• bombarded

• 纪念品英语
• bothering
• 实施英文
• emergency
• scared
• fake
• narrow
• explore
• theatre
• panicked
• passage
• toxicity
• 领域英语
• BARRIE
• algiers
• 导师英文
• chess翻译
• tourist
• autumn
• peeping
• intermission
• lake
• 旋律的英文
• modernize
• brat
• searches
• failure
• 队长的英文
• 方案英语
• droplets

• lantern pole
• holohedral symmetry
• Egg cake
• later generations
• Erode into
• volatilization
• ammonium bithiolicum
• petrographic facies
• broadcasted
• grande toilette
• colloid substance
• pleasant to hear
• rock pillar
• Electromagnetic tile
• Powder quality
• Cluster cavity
• alien races
• To gamble
• Cornele
• To integrate
• divide out
• secret service
• interested parties
• knock head
• magnetic plug