3 sentences

1. 您还需要确保食物既健康又低热量。

   nín hái xū​yào què​bǎo shí​wù jì jiàn​kāng yòu dī rè​liàng.

   You also need to make sure that food is both healthy and low in calories.

   Source: CCMatrix

2. 另外，一半的葡萄柚只含有52卡路里，使其成为最低热量的水果之一。

   lìng​wài, yī​bàn de pú​táo​yòu zhǐ hán​yǒu52 kǎ​lù​lǐ, shǐ qí chéng​wéi zuì​dī rè​liàng de shuǐ​guǒ zhī​yī.

   Plus, half a grapefruit contains only 52 calories, making it one of the lowest-calorie fruits.

   Source: CCMatrix

3. 减肥的最佳方法是将营养丰富的低热量饮食与定期的体力活动相结合。

   jiǎn féi de zuì​jiā fāng​fǎ shì jiāng yíng​yǎng fēng​fù de dī rè​liàng yǐn​shí yǔ dìng​qī de tǐ​lì huó​dòng xiāng jié​hé.

   The best way to lose weight is through combining a nutritious, low-calorie diet with regular physical activity.

   Source: CCMatrix