For most of human history, cattle, sheep and goats grazed on land that wasn't suitable for ploughing, and in doing so they converted inedible grass into edible meat and milk.

在人类的大部分历史时期，人们在不适合耕种的土地上放牧牛羊，这样它们就把不能食用的草转变成了肉和奶。

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Robot can do a wide variety of tasks. They are especially suitable for doing jobs too boring, difficult or dangerous for human beings.

机器人可以做许多工作，尤其适用于从事那些人们看来单调、困难、危险的工作。

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Keep doing this until you have thought up suitable alternative behaviours for each of the passive behaviours you know that you tend to use.

直到你对每一个你知道的倾向于采取的被动行为都想出了适合的别的行为为止。

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Unite said more than 100 toolmakers have not been found suitable jobs, while workers who are being redeployed are being given little information about what work they will be doing once they are transferred.

BBC: Protest at Ford's plans for Dagenham and Southampton

After a suitable period of time, perhaps halfway to the next review, ask the boss for feedback on how you are doing on the specific issues that were addressed.

CNN: Know this before your performance review