3 sentences

1. 7月和8月可能会非常炎热和潮湿。

   7 yuè hé8 yuè kě​néng huì fēi​cháng yán​rè hé cháo​shī.

   July and August can be very hot and humid.

   Source: CCMatrix

2. 大多数加热和冷却系统都不会带来新鲜的室外空气。

   dà​duō​shù jiā​rè hé lěng​què xì​tǒng dōu bù​huì dài lái xīn​xian de shì​wài kōng​qì.

   Most heating and cooling systems do not bring fresh outdoor air in.

   Source: CCMatrix

3. 在更极端的情况下，肮脏的过滤器会损坏加热和冷却设备。

   zài gèng jí​duān de qíng​kuàng xià, āng​zāng de guò​lǜ​qì huì sǔn​huài jiā​rè hé lěng​què shè​bèi.

   In the more extreme cases, dirty filters can damage heating and cooling equipment.

   Source: CCMatrix