9 sentences

1. 他对这里的地形了如指掌。

   tā duì zhè​lǐ de dì​xíng liǎo​rú​zhǐ​zhǎng.

   He knows the terrain here like the back of his hand.

   Source: Dong Chinese Dictionary

2. 先遣部队被派往前方探查地形。

   xiān​qiǎn bù​duì bèi pài wǎng qián​fāng tàn​chá dì​xíng.

   An advance party was sent ahead to reconnoiter the terrain.

   Source: Dong Chinese Dictionary

3. 工程师们正在实地进行地形测绘。

   gōng​chéng​shī men zhèng​zài shí​dì jìn​xíng dì​xíng cè​huì.

   Engineers are conducting field topographical mapping.

   Source: Dong Chinese Dictionary

4. 这里的地形重叠交错，进山后很容易迷路。

   zhè​lǐ de dì​xíng chóng​dié jiāo cuò, jìn​shān hòu hěn róng​yì mí​lù.

   The terrain here is overlapping and crisscrossed; it's easy to get lost after entering the mountains.

   Source: Dong Chinese Dictionary

5. 这里的地形非常复杂，不适合大规模行军。

   zhè​lǐ de dì​xíng fēi​cháng fù​zá, bù shì​hé dà​guī​mó xíng​jūn.

   The terrain here is very complex and unsuitable for large-scale military maneuvers.

   Source: Dong Chinese Dictionary

6. 这两座山岭的山势互相参错，地形非常复杂。

   zhè liǎng zuò shān​lǐng de shān​shì hù​xiāng cān cuò, dì​xíng fēi​cháng fù​zá.

   The terrain of these two ridges is intertwined and complex.

   Source: Dong Chinese Dictionary

7. 这里的地形很复杂，我们必须尽快找到出路。

   zhè​lǐ de dì​xíng hěn fù​zá, wǒ​men bì​xū jǐn​kuài zhǎo​dào chū​lù.

   The terrain here is very complex; we must find a way out as soon as possible.

   Source: Dong Chinese Dictionary

8. 这支勘测队正在对施工场地进行地形测量。

   zhè zhī kān​cè​duì zhèng​zài duì shī​gōng chǎng​dì jìn​xíng dì​xíng cè​liáng.

   The survey team is conducting a topographical survey of the construction site.

   Source: Dong Chinese Dictionary

9. 为了更准确地展示地形，我们使用了墨卡托投影。

   wèi​le gèng zhǔn​què de zhǎn​shì dì​xíng, wǒ​men shǐ​yòng le Mò​kǎ​tuō tóu​yǐng.

   To represent the terrain more accurately, we used the Mercator projection.

   Source: Dong Chinese Dictionary