The children do not know how to behave themselves decently.
小孩子不懂如何举止得体。
It's really not so hard to act decently.
表现得大方一点并不那么难。
They don't know how to dress decently.
他们不知道如何才能穿着得体。
Do you know how to speak decently when you call someone?
你知道汉语打电话时的礼貌用语吗？
Do you know how to speak decently when you call someone?
你知道汉语打电话时的礼貌用语吗？
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