您可以使用iKeyman 来创建新的自签名证书，如我们刚才所示，或是向您的信任库中添加CA 证书。
You can use iKeyman to create a new self-signed certificate as we've just shown, or add a CA certificate to your own truststore.
论我们刚才创建的外形的顶部，绘制一个黑暗的圆角矩形。添加描边图层样式。
On top of the shape we have just created, draw a dark rounded rectangle. Add Layer Style Stroke.
冯欣：那比如说合法的食品添加剂，刚才我们讲到了过量使用也会造成安全的隐患。
Feng Xin: Then, what about legal food additives? Overuse of them will also pose a safety threat.
冯欣：那比如说合法的食品添加剂，刚才我们讲到了过量使用也会造成安全的隐患。
Feng Xin: Then, what about legal food additives? Overuse of them will also pose a safety threat.
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