快一岁时，他们的牙已足以嚼动硬的食物。
By the end of the first year they have enough teeth to eat coarser foods.
并且讨论了软、硬单体配比，宫能单体含量及乳化剂用量等因素对压敏胶粘度、快粘力、持粘力、剥离强度等性能的影响。
The effects of propdrtion of soft and hard monomer, the content of functional monomer and emulsifier on the viscosity, ball tack and hold tack, peeling strength of adhesives were discussed.
当她用一把又硬又快的剪刀尖，在一块白亚麻布上剪出一个一个的小洞眼作什么莫名其妙的装饰品的时候，庞得贝先生就坐在那儿盯著她。
Mr. bounderby sat looking at her, as, with the points of a stiff, sharp pair of scissors, she picked out holes for some inscrutable ornamental purpose, in a piece of cambric.
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