我们尽力说服那位紧张的老太太，使她相信乘飞机是安全的。
We tried to assure the nervous old lady that flying was safe.
如何满足安全性需求，使每个用户只看到他/她应该看到的内容。
How can security requirements be met, such that each user sees only what she is supposed to see?
她记录了塑料带来的巨大便利——如使输血变得安全和普遍等等。
She notes that plastics have had enormously beneficial impacts - like making blood transfusions safe and common.
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