advertisement是可数名词，复数形式是advertisements
advertisement
英 [ədˈvɜːtɪsmənt]
美 [ˌædvərˈtaɪzmənt]
n.广告;启事;广告(样)品;广告活动;广告宣传
例句
If I had seen the advertisement in time I would have applied for the job.
我要是及时看到了这则广告，我就应聘那份工作了。
The advertisements were all posted in a conspicuous place.
广告都贴在了显眼的地方。
Young people are the most susceptible to advertisements
年轻人最容易受广告的影响。
