4 sentences

1. 穗港澳地区经济往来频繁。

   Suì Gǎng ào dì​qū jīng​jì wǎng​lái pín​fán.

   Economic exchanges among the Guangzhou, Hong Kong, and Macau regions are frequent.

   Source: Dong Chinese Dictionary

2. 办理去港澳旅游的手续比以前简单多了。

   bàn​lǐ qù Gǎng ào lǚ​yóu de shǒu​xù bǐ yǐ​qián jiǎn​dān duō le.

   The procedures for traveling to Hong Kong and Macau are much simpler than they used to be.

   Source: Dong Chinese Dictionary

3. 这处海澳风平浪静，适合船只停泊。

   zhè chù hǎi ào fēng​píng​làng​jìng, shì​hé chuán​zhī tíng​bó.

   This bay is calm and tranquil, suitable for ships to anchor.

   Source: Dong Chinese Dictionary

4. 这次活动有力地促进了中澳两国的经济合作。

   zhè cì huó​dòng yǒu​lì de cù​jìn le Zhōng ào liǎng guó de jīng​jì hé​zuò.

   This activity has strongly promoted economic cooperation between China and Australia.

   Source: Dong Chinese Dictionary