5 sentences for 约 (yuē — economical)

1. 大家一起节约用水吧。

   dà​jiā yī​qǐ jié​yuē yòng​shuǐ ba.

   Let’s save water together.

   Source: CCMatrix

2. 你应该调低恒温器来节约能源。

   nǐ yīng​gāi tiáo dī héng​wēn​qì lái jié​yuē néng​yuán.

   You should / ought to turn down your thermostat to save energy.

   Source: UM-Corpus: News

3. 此类机器和机器人也能节约不少时间。

   cǐ​lèi jī​qì hé jī​qì​rén yě néng jié​yuē bù​shǎo shí​jiān.

   Such machines and robots can also save a lot of time.

   Source: CCMatrix

4. 上次我去杂货店，用优惠券节约了20多块钱。

   shàng​cì wǒ qù zá​huò​diàn, yòng yōu​huì​quàn jié​yuē le20 duō kuài qián.

   The last time I went to the grocery store, I saved over $20 just by using coupons.

   Source: UM-Corpus: News

5. 洗手时关掉水龙头10秒钟可节约水和能源。

   xǐ shǒu shí guān diào shuǐ​lóng​tou10 miǎo​zhōng kě jié​yuē shuǐ hé néng​yuán.

   Turning off the faucet for 10 seconds while washing your hands can save both water and energy.

   Source: CCMatrix