3 sentences

1. 开源意味着不仅仅是自由使用。

   kāi​yuán yì​wèi​zhe bù​jǐn​jǐn shì zì​yóu shǐ​yòng.

   Open source means more than simply free to use.

   Source: CCMatrix

2. 我也强烈建议为开源项目做贡献。

   wǒ yě qiáng​liè jiàn​yì wèi kāi​yuán xiàng​mù zuò gòng​xiàn.

   I also highly recommend contributing to open source projects.

   Source: CCMatrix

3. 有些是开源和免费的，另外的一些并不是。

   yǒu​xiē shì kāi​yuán hé miǎn fèi de, lìng​wài de yī​xiē bìng bù​shì.

   Some of them are open source and free, while others are not.

   Source: CCMatrix