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一个社会的真正考验在于它如何对待最脆弱的成员。
The best stock to buy is the one you already own.
Every decision we make today about our oceans will echo for centuries.
Transparency in sourcing isn’t optional—it’s a responsibility.
The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.
我只是一个努力实现梦想的孩子