17. 20% of the people are attracted by the style.
有两成的人们为款式所吸引。
还能这样说：
20% of the people like the style.
The style can attract 20% of the people.

18. Competition for this kind of product is tough.
这种商品的竞争非常激烈。
还能这样说：
This kind of product is competitive.
This kind of product is among fierce competition.
应用解析：
be tough with sb. 采取坚决态度，采取强硬手段；
a tough nut 难以应付的问题或情况；
as tough as old boots 很硬的，很老的、咬不动的；
a tough customer 难对付的人

19. The marketing methods put us several steps ahead of our main rivals.
由于销售方法得当，我们超过主要对手几个等级。
还能这样说：
We surpass our main rivals because of the marketing methods.
The marketing methods help us defeat our main competitors.
应用解析：
in step 步伐一致，和谐；
keep step 齐步走；
take steps to do sth. 采取行动；
watch one's step 小心谨慎；
step on it 快点走；
step out of line 行为与众不同