单词	leapfrog
释义	noun | verb leapfrogleapfrog1 /ˈlipfrɑg/ noun [uncountable] Etymology ETYMOLOGYleapfrog1 Origin: 1500-1600 Because the jumping players look like frogs a children’s game in which someone bends over and someone else jumps over him or her noun | verb leapfrogleapfrog2 verb [intransitive, transitive] Verb Table VERB TABLE leapfrog Simple Form Present I, you, we, they leapfrog he, she, it leapfrogs Past I, you, he, she, it, we, they leapfrogged Present perfect I, you, we, they have leapfrogged he, she, it has leapfrogged Past perfect I, you, he, she, it, we, they had leapfrogged Future I, you, he, she, it, we, they will leapfrog Future perfect I, you, he, she, it, we, they will have leapfrogged Continuous Form Present I am leapfrogging he, she, it is leapfrogging you, we, they are leapfrogging Past I, he, she, it was leapfrogging you, we, they were leapfrogging Present perfect I, you, we, they have been leapfrogging he, she, it has been leapfrogging Past perfect I, you, he, she, it, we, they had been leapfrogging Future I, you, he, she, it, we, they will be leapfrogging Future perfect I, you, he, she, it, we, they will have been leapfrogging to achieve something more quickly than usual, especially by missing some of the usual stages:  The win leapfrogged them into second place.
随便看	obsequies obsequious obsequiously observable observably observance observant observation observational observation post observation tower observatory observe observer obsess obsession obsessional obsessive obsessive-compulsive obsessively obsidian obsolescence obsolescent obsolete obstacle

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