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- Hard water which can be softened by adding sodium carbonate is called permanent hard water. 经过加入碳酸钠能被软化的硬水，称为永硬水。
- It will prevent permanent hard drive defects caused by the hard drive heads contacting the surface of the drive disc. 它可以防止永久性的故障，这些故障都是由于硬盘驱动头接触了驱动盘表面造成的。
- 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。
- Nothing can assure permanent happiness. 没有什么东西能确保永久的幸福。
- I'm looking for a permanent appointment. 我正在寻找固定的工作。
- She is looking for permanent employment. 她正在找固定的工作。
- 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。
- They established their permanent abode here. 他们在此建立了永久居所。
- 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。
- Pig iron used as permanent ballast. 压载铁做为永久性压舱物的生铁
- 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。
- She went to a beauty salon for a permanent. 她到美容院去烫了发。
- 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。
- The injury left him with a permanent limp. 他受伤后就一直瘸了。
- 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。
