安全不是我们的优先事项，而是我们的基础。
Technology alone won't solve our problems—it's how we apply it with ethics and foresight that matters.
你得先学会爬才能走，先学会走才能跑。
心灵可以被视为一个物理符号系统。
A balcony or porch needs to be at least 6 feet (2m) deep or it won’t be used.