形容詞 nationwide:

1. occurring or extending throughout a country or nation
   同義詞：countrywide

副詞 nationwide:

1. extending throughout an entire nation
   同義詞：nationally, across the nation, across the country

1. Before starting the new service, the company carry out nationwide opinion poll.
   推出新的服務(wù)方式前，公司進(jìn)行了全國(guó)范圍的民意調(diào)查。
2. The new car is being launched with a nationwide sale campaign.
   新型汽車以開展全國(guó)的銷售活動(dòng)投放市場(chǎng)。
3. A speech that was broadcast nationwide; nationwide opposition to the tax hike.
   全國(guó)性的播出的演說(shuō); 全國(guó)性的反對(duì)稅收增多
4. The chairman's speech will be broadcast nationwide.
   主席的講話將向全國(guó)廣播。

na.tion.wide

adv.（副詞）
adj.（形容詞）
Throughout a whole nation:
全國(guó)性的：在全國(guó)范圍內(nèi)：
例句：
a speech that was broadcast nationwide; nationwide opposition to the tax hike.
全國(guó)性的播出的演說(shuō)；全國(guó)性的反對(duì)稅收增多