Idiom: Not bat an eye 不眨眼睛，无动于衷 Hit the book: Perform trick Infiltrate Jab Ban Intrinsic Mammal Coalition Aquarium...
Idiom: Not all there 神志不太清楚，状态不好 Hit the book: Surplus Cull Pack Cub Hybrid Rally Prosecute Breach Whistleblower Contravention Disposal Outrage...
Idiom: Nose in the air形容人自大，傲慢 Hit the book: Undercover Confiscate Enclosure Visible Multiple Cub Notorious Lameness...
Idiom: No time to lose 刻不容缓 Hit the book: At risk Conservation Destruction Take something seriously Be responsible for Delicate Tend Appreciate...
Idiom: No time forsth 对没有耐心，厌烦某事 Hit the book: Residential Zoological Botanical Creature Polar bear Seal Komodo dragon Reside Captivity Deny...
Idiom: No sweat 没有问题，小菜一碟 Hit the book: personal contact 个人接触 emergency 紧急情况 sufficient 足够的 within walking distance 在步行距离之内 orchard 果园 ambulance 救护车 swap 交换 rural 郊区的，农村的...
Idiom: No spring chicken 不再年轻 Hit the book: mortality 死亡率 rate 比率 implicate 涉及，卷入 pox 水痘 outbreak 突发，爆发 take precaution 注意，小心...
Idiom: No spine 没有勇气，胆小鬼 Hit the book: Adventurous Towering Penguin Infectious Immune system Isolation Pathogen Simultaneously For those who go, it's the trip of a lifetime and it wouldn't be complete without a selfie with penguins. B...
Idiom: No skin off my nose 不是我的事，不受影响 Hit the book: Hemisphere Ferocious Frost-bite Scientific station Kayaking Mountaineering Scuba-diving...
Idiom: People person 开朗大方的 Hit the book: commodity 商品 be subject to 受到一个制度的影响 fine 处罚 patriotic 爱国的 bizarre 奇怪的 stack up 堆积起来 eco-friendly 环保的 discreet 谨慎的 congested 拥挤的...
