In fact the temperature of a healthy body is so variable that there is no single normal temperature, even for an individual. 事實上健康的體溫是總是變化著的，沒有保持不變的標準溫度，即使是對單獨個體也是如此。
A child lied down on the bed because his body temperature aboved the regulars. 一個孩子躺在床上，因為他的體溫超過了正常溫度。
When winter comes, honeybees form a ball deep in their hive to regulate the hive temperature. 當冬季來臨時，蜜蜂們會在蜂箱的深處抱成一個球來維持巢里的正常溫度。
