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- Children do not have a hard lens nucleus, so it is possible to remove the entire cataract by aspiration alone. 孩子们的确没有一个坚硬的晶状体核，因此，通过抽吸装置可以移除整个白内障。
- Bausch & Lomb invented the soft contact lens but failed to launch it because the firm did not want to lose the lucrative business of selling the drops that hard lenses require. 博士伦发明了软性隐形眼镜后并未将其推上市场，因为出售硬镜片所需的药水是个赚钱的生意，它不愿意失去这有利可图的业务。
- It is hard to sleep without a cooler in this room. 没有空气调节器，在这间屋里很难入睡。
- John felt it hard to rig out his family. 约翰感到难以为一家大小置备衣着。
- The hard core in the party make all the decisions. 这个党的核心成员决定一切。
- Hard copy is computer output on paper, printing or graphics. 硬拷贝是出现在纸上、印刷上或图表上的电脑输出。
- I scrubbed hard at the stain to see if I could get it off. 我使劲擦这个污迹，看能不能将它去掉。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- He pushed hard on the brake pedal to avoid a collision. 他使劲踩下煞车踏板以避免撞车。
- One can not learn a language well unless one works hard. 学好一种语言非下苦功不可。
- Let's collect the sap before its consolidation into a hard mass. 让我们在树液坚固成团之前将之收集起来。
- He owes his opulence to work hard. 他的财富乃辛勤工作得来。
- She was trying hard to disgorge a fish bone. 她拚命想把鱼刺吐出来。
- The emery is a hard metallic substance. 金刚砂是非常坚硬的金属物质。
- Hard training will fit them to run long distances. 严格的训练将使他们能跑长距离。
- Seth really took it hard when his old dog died. 塞思的那条老狗死的时候，他确实怏怏不乐。
- Heavy taxes indispose a citizen to work hard. 重税于国民不愿意辛勤工作。
- An ageing lens goes yellow, cloudy and hard. 一个正在老化的晶体变黄、混浊和变硬。
- It was hard work getting the children off to bed. 哄孩子们去睡可不是容易的事。
- We must take a hard look at our finances. 我们应该密切注意财务问题。
