这证明是我的失败，因为我不久就回到在电视屏幕前打瞌睡的坏习惯去了。
◇ practice 既可表示个人的也可表示社会的“习惯”，这种“习惯”从性质上看是一种反复不断的或是有选择性的行为或者方法 On the other hand, your stomach would turn at the idea of frying potatoes in animal fat——the normally accepted practice in many northern countries.
在另一方面，一想到用动物油煎马铃薯，你便会作呕。然而在许多北欧国家里，这是为大家接受的通常习惯。
She walked slowly into the hall and at once noticed that all the room doors were open,yet following her general practice she had shut them before going out.
她慢慢地走进厅堂，并且立刻发现所有的房门都是开着的。但是按照她自己的一般习惯，她在外出前总是把门全部关好的。
◇ custom 具有 habit 和 practice 的一切含义，此外，custom 还包含这样一层意思：长期而广泛采用的行为或方法，即风俗习惯，按照某地区人们共同生活及其行为的准则或规范，它不仅有指导意义，而且具有必须遵循的意义
Don't be a slave to custom. 不要做风俗习惯的奴隶。 From the moment of his birth the customs into which he is born shape his experience and behaviour.
一个人从诞生的那一时刻起，他降生后所处的风俗习惯便给他的阅历
和行为定型。
◇ convention 其实是其他3个词的近义词，它的含义为：固定的或公众一致承认的行事或表达思想的方法
They disregard social conventions without being conscious that they are doing anything extraordinary.
他们不顾社会习俗，并未意识到自己在做些与众不同的事。 ◆ hand down；hand in；hand over；hand out ； by hand ；hands up ◇ hand down作“把??传下来”解。例如：
?knowledge， customs and memories were handed down by the elders of the race．
??他们的知识，生活习惯以及人们所怀念的事情，都是由他们的祖先传下来的。
The story was handed down from one generation to another．这个故事世代相传。
◇ hand in为“把??交上来” 、“交给”、“递交”之意。例如： Time is up．Hand in your examination papers．时间到了，请把试卷交上来。
◇ hand over作“转交”或“移送”解。例如：
Please hand over this money to XiaoZhou．请将这笔钱转交小周。 The thief was handed over to the police．小偷已被移送到公安机关了。 ◇ hand out为“散发”之意。例如：
When I got to the classroom the teacher had already begun handing out