只要输入验证码，这本书就能安全地发送到你的移动设备里。
Just type in the verification code and the book is securely transmitted to your mobile device.
于是他就背起这位瘸子朋友，这样他们就能安全又愉快地继续行路了。
So he took his lame friend on his back, and they were able to travel safely and happily.
一路上空寂无人，她慢慢地、静静地走着，再有几百米就能安全到家了。
She walked slowly and silently. Just in a few hundred meters she would have been safe in her house.
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