How to tell if your eggs are fresh and safe to eat without even cracking them open!
不打开你的鸡蛋如何判断它们是新鲜且安全可食用的！
2
Also discussed is the inevitability of the said J55 casing perforation cracking on the basis of result from research concerning perforation safe toughness.
同时还应用射孔安全韧性判据的研究成果，论证了该J 55套管射孔开裂的必然性。
3
But home wireless networks may not be all that safe either, because of free and widely available Wi-Fi cracking programs like Gerix WiFi Cracker, Aircrack-ng and Wifite.
但是，一些类似于Gerix WiFi Cracker, Aircrack-ng and Wifite的广泛使用的免费破解程序使得家中的无线网也并非固若金汤。