仅仅是你坚定地拿着放大镜聚集在单个物体上，炙热的太阳光比作你的期望，聚集，力量，精力，时间等等。你会带来冲击。

Just as you steady a magnifying glass on a single object, with the hot burning sun rays analogous to your desire, focus, power, energy, time, etc, you will make an impact.

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“好好睡上一晚才是你需要的，”他坚定地说。

"A good night's sleep is what you want," he said firmly.

《柯林斯英汉双解大词典》

“彼得，”她问，试图坚定地说，“你对我到底是什么感觉？”

"Peter," she asked, trying to speak firmly, "what are your exact feelings to [about] me?"

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