1、俗话说……，它是我们前辈的经历，但是，即使今天，它在许多场合仍然使用。
there is an old saying省略.it is the experience of our forefathers,however,it is correct in many cases even today.
2、现在，……，它们给我们的日常生活带来了许多危害。首先，……;其次，……。更为糟糕的是……。
today,省略,which have brought a lot of harms in our daily life.first,省略,second,省略.what makes things worse is that 省略。
3、任何事物都是两面性，……也不例外。它既有有利的一面，也有不利的一面。
everything has two sides and 省略is not an exception.it has both advantages and disadvantages.