The teacher is cleaning the blackboard with a board rubber.

老师正在用黑板擦擦黑板。

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The scope of Ford's recent rubber research, which was funded in part by grants from the United Soybean Board (USB), included the use of soy fillers (flour, meal) as well as soy oils.

通过美国大豆委员会的资助，福特最近的橡胶材料研究范围包括大豆填充物（面粉，食品）和豆油的使用。

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Rubber boats with British marine commandos on board circled the Montecristo, while a helicopter hovered above.

装满了英国海军陆战队突击队员的救生船包围了“基督山”号，另外还有一辆直升机盘旋在上空。

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But seven counties had voted against the proposals, and the ECB's management board has not rubber-stamped the plan.

BBC: County schedule for 2011 delayed after disagreement

Loit then saw off Alexandra Stevenson 6-4 6-2 in 54 minutes to put France 4-0 up before the USA finally got on the board in the final rubber.

BBC: SPORT | Tennis | France win Fed Cup

Bruce had negotiated a new deal with Birmingham's current board but Yeung has not yet rubber stamped the contract.

BBC: Foxes reject Bolton's Megson move