他们也喜欢跟数数、字母表、形状和尺寸、动物或卡车有关的书，还有那些教他们说你好和再见的书。
They also like books about counting, the alphabet, shapes and sizes, animals or trucks and books about saying hello and goodbye.
考虑一下忽略“你好”，“再见”和其它可有可无的闲聊。
Just think of all the hellos, good-byes and other unnecessary chit-chat you avoided.
在夏威夷土语中，Aloha是一句问候语，具有“你好”和“再见”的双重意思。
That is the friendly greeting that means both "hello" and "goodbye" in the native Hawaiian language.
外出时，应该让孩子练习和售货员和其他顾客说“你好”和“再见”。
Let your child practice his "hi's" and "bye-byes" on clerks and other shoppers on your outings.
外出时，应该让孩子练习和售货员和其他顾客说“你好”和“再见”。
Let your child practice his "hi's" and "bye-byes" on clerks and other shoppers on your outings.
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