All gifts,even money,should be wrapped,but your host will not probably open the gifts in front of you. This will show the host thinks the giving of gifes is more inportant than the real gifts. Use both your hands when you give or receive a gift.
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Hot food should be wrapped well, placed in an insulated container, and kept at or above 140 f.
热的食物应包装好，放置在一个绝热容器中，并将其保持在华氏140度的温度或以上。
Actually, such systems should be wrapped by real services -applications - and used only as service resources.
事实上，这样的系统应该由实际的服务应用进行包装，只用作服务资源。
When possible, commonly used code should be wrapped up in frameworks and libraries where you don't have to look at it.
只要有可能，常用的代码应该被包装进框架或者库里面，不需要整天看到它们。
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