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1. Oxford American Dictionary

   blastoff

   • IPA[ˈblastˌôf]

   美式

   • n.
     the launching of a rocket or spacecraft

   • noun: blast-off, plural noun: blast-offs

2. • 釋義

   n.

   名詞

   • 1. the launching of a rocket or spacecraft a blastoff thrust of 78,000 lb the policy was now in place for blastoff