With the arrival of summer , chp has asked people to be on the alert about food poisoning . as many bacteria causing food poisoning multiply faster in higher temperature , there is an increased risk of food poisoning outbreaks in the hot season 生防护中心呼吁市民在夏季必须慎防食物中毒，由于很多细菌在比较高的气温下繁殖迅速，因此夏季爆发食物中毒个案的风险相对较高。
In our recent school projects , fresh air pre - conditioners are incorporated into the air - conditioning system . this mechanism ensures good air quality by supplying adequate fresh air while at the same time utilizing the exhaust air to pre - cool ( in the hot season ) or pre - heat ( in the cold season ) the fresh air intake 近期的学校工程项目，均在空调系统加入鲜风预调机，一方面输入充足新鲜空气维持良好的室内空气质素，同时亦利用抽出的室内废气去预调新鲜空气的温度，夏天时可预先将空气降温，冬天则可预先加暖。
