巧克力蛋糕是种高热量食物，每周最多吃一小块。

Chocolate cake is a ___high-calorie food, so you should only have a small piece once a week.

医生建议术后病人喝高热量营养奶昔来加速恢复。

Doctors recommend ___high-calorie nutritional shakes for post-surgery patients to speed up recovery.