It means that you don't have to worry about not being able to identify the quality of the goods, just compare the goods of several companies.
This is a Chinese proverb, which is a colloquial and popular language unit created by the people in Chinese vocabulary and circulated in the spoken language of the people.
Semantic analysis: comparison can find out the gaps and differences, advantages and disadvantages, and judge the advantages and disadvantages. There are similar proverbs, such as "shopping around doesn't hurt" and "people are more popular than people".
Sentence type: select complex sentences. "If you are not afraid, you will be afraid ..." is a relative word, indicating that you have made a choice. Give up first and then accept. In other words, although there are two options in the sentence, there is actually a definite choice. "Not knowing the goods" is not important, but "shopping around" is important.
Common proverbs:
1, small amount is not a gentleman, non-toxic is not a husband.
2, people can't judge by appearances, and the sea water can't be measured.
3, if others don't know, unless you do it yourself.
4. Good medicine tastes bitter and is good for illness, but advice when most unpleasant is good for action.
5, the narrow road meets the brave and wins.
6, smile, ten years old; Trouble, sorrow, hoary head.
7. Catch the thief first.