按部就班àn bù jiù bān
follow the prescribed order, step-by-step
限定xiàn dìng
prescribe a limit to; limit; restrict; define; qualify
历时lì shí
last a period of time, take a period of time
原声例句
TED演讲(视频版)双语精选
It is the absence of food during a prescribed time period.
基本上就是在特定的一段时间内完全不吃任何食物。
日常生活医学科普
Do not use antibiotics without proper prescription or use less than the prescribed period as this leads to antibiotic resistance, resulting in tougher infections.