breakthrough - Scientists don't often make ________________s that are important, trade-off - There's a .... between making the battery bigger and increasing the weight of the product., breakdown - The engine used in the early model had many __________________s. , outcome - The _______________ of the experiment was not possible to guess., drawback - The ___________________ of this material is the cost., downside - The __________________ of the move to paper straws is that they become too soft in water., outlook - The _____________________ for the quarantine remains vague.,

Speakout Upper-Intermediate. Unit 5.2

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