他写了一封艰难的长信，给戴尔长官，请求允许自己迎娶宝嘉康蒂。
He composed a long, laborious letter to Governor Dale asking for permission to marry Pocahontas.
精密控制涂封深度是工艺关键。以新宝华公司新型封端机为例，介绍设备的结构和工作原理。
With the new end-coating machines made by new Baohu Co. as example, the structure and principle of end-coating machines are presented.
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