The experiments with domestication probably occurred in many places, as people living in ever-drier environments cast around for more predictable food supplies.
随着人们居住环境不断变得干燥，以及食物供给的可预测性越来越强，驯化尝试很可能会在很多地方进行。
John cast around for a good subject for his report.
约翰想给他的报告找个好题目。
Some of Mr Annan's American critics called for his removal as secretary-general and cast around for sticks to beat him with.
一些美国批评家要求他辞职，并且乘机攻击安南。
YouTube and its rivals have cast around for more sophisticated ways to present advertising for some time but without finding an answer.
YouTube及其对手已花了不少时间寻求更精巧的方法来呈现广告，但并未找到答案。
She cast around desperately for a safe topic of conversation.
她绞尽脑汁寻找稳妥的话题。
Voters will cast ballots for all 435 numbers of the House Representatives, plus around a third of the seats in the Senate.
选民们会把票投给众议院的所有435名代表，加上大约三分之一的参议院席位。
The company is having to cast around feverishly for ways to cut its costs.
公司迫切须要想出各种降低成本的办法。
The company is having to cast around feverishly for ways to cut its costs.
公司迫切须要想出各种降低成本的办法。
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