Final quibble: The tobacco virus "word" is entirely technical. Its spelling is essentially a syllabic string of abbreviations for amino acids.

最后：那个烟草病毒的“单词”完全是专业名词。它的拼写实质上是各种氨基酸的缩写所构成的一个音节串。

youdao

I want to leave you with one final word to remember, "teamwork".

我想让你们记住最后一个词：“团队合作”。

youdao

When good students turn in an essay, they dream of their instructor returning it to them in exactly the same condition, save for a single word added in the margin of the final page: "Flawless."

当优秀的学生上交一篇文章时，他们梦想着老师能把它原封不动地还给他们，除了在最后一页的空白处加了一个词：“完美无瑕”。

youdao

He believed that Americans -- North and South -- would accept the decision as the final word in the dispute.

VOA: special.2009.05.21

Mr. Williams, the Cambridge-London commuter, offers a final word of advice to would-be car-sharers: avoid being too chatty on a Monday.

WSJ: European Commuters Embrace Car-Sharing

In other words, the putative remedy for the eurozone that was negotiated just five days ago in such dramatic circumstance - and which was supposed to be the definitive and final word on the subject - is in danger of disintegrating even before it goes before leaders of the G20 most powerful economies on Thursday and Friday for their blessing.

BBC: The price of Greek democracy

Social media (in China, BBSes, QQ, Sina Weibo and other mobile texting services) provide reinforcement, acting as word-of-mouth before the final purchase decision is made, which may be made online or offline.

FORBES: What is Holding Back Digital Advertising Adspend in China?