This tech company's growth has been supersonic in the past year.

supersonic 由前缀 super-（表示"超过、超级"）和 sonic（"声音的、音速的"）组成，字面意思是"超过音速的"。在句中用作比喻，形容发展速度"极快、惊人"，就像超音速飞机一样迅猛。