继子女面临更大风险，因为进化压力塑造了父母更偏爱自己基因后代的心理。
Stepchildren are at greater risk because evolutionary pressures have shaped parental psychology to favor genetic offspring.
The city is the collective memory of its people, and like memory it is associated with objects and places.
I'm not a genius, I just work harder than others.
在我们迈向低碳未来的过程中，天然气将在能源结构中发挥关键作用。
人生重要的事情是确定一个伟大的目标，并决心实现它。
实现明天理想的唯一障碍是今天的疑虑。