It is necessary for you to read all instructions carefully before every experiment.

你有必要在每次实验前仔细阅读所有的说明。

youdao

A later experiment added a new twist: cells that contained instructions on where to go to find food.

之后的实验又增加了花样：在电池网格中包含了到哪里寻找食物的指令。

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My assistant, who had carefully read through the instructions before doing his experiment, could not obtain satisfactory result, because he followed them mechanically.

尽管我的助手在做实验前已从头到尾仔细阅读了说明书，可由于他生搬硬套，没能获得满意的结果。

youdao

All of the materials needed for each experiment are included, along with a lesson plan, instructions and "factoid" cards with tidbits of interesting trivia, such as the number of elements on the periodic scale.

ENGADGET