充分的课前准备是费时、费力的的翻译：Adequate preparation is time consuming, laborious 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Full pre-class preparation is time-consuming, laborious

Adequate preparation is time consuming, laborious

In front of the full class the preparation is time-consuming, the hard sledding

Full of lesson preparation is time-consuming and laborious

Adequate preparation is time consuming, laborious