"There is one objective: to encourage homes and businesses to change their behaviour," he added.
他补充道：“我们有一个目标：鼓励家庭和企业改变他们使用燃料的习惯。”
It requires objective and logical analysis of human behaviour.
它需要对人类行为作出客观及逻辑性的分析。
This is desirable but by no means essential to the primary objective of validating mathematical models of aircraft behaviour.
对于验证飞机性能的数学模型这一主要目的来说，这是必须的，但决不是最本质的。
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