He may have a hard job selling that argument to investors.
他要让投资者们接受那一观点可能是件难事。
The lesson for companies is that selling green is hard work.
企业所得到的教训就是：销售绿色产品远非易事。
Living on selling benne, he led a hard and poor life.
他靠卖胡麻为生，日子过得很清苦。
Living on selling benne, he led a hard and poor life.
他靠卖胡麻为生，日子过得很清苦。
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