慢速英语:美国战犬在国会大厦受表彰

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stage – n. a raised platform in a theater, auditorium, etc., where the performers stand

leash – n. a long, thin piece of rope, chain, etc., that is used for holding a dog or other animal

gracefully – adv. moving in a smooth and attractive way

comfort – v. to cause (someone) to feel less worried, upset, frightened, etc.: to give comfort to (someone)

sniff out – phrasal verb to smell (something or someone) by taking air in through your nose in short breaths