精巧的设计保证光线可以从LED中轻松释出，从而改进其功效。
And design tweaks have improved efficiency by ensuring that light can escape from LEDs easily.
通过《Kefauver - Harris药品修正案》以保证药品功效和更好的药品安全性。
Kefauver-Harris drug Amendments passed to ensure drug efficacy and greater drug safety.
面对消费用技术，公司面临的挑战是如何管理这些技术既保证其功效，又不会损失工作时间或金钱。
The challenge for companies is to figure out how to manage consumer technologies in a way that doesn\'t limit their usefulness but doesn\'t result in lost time and money.
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