hard.的例句（hard.在句子中的用法）

• Silicon is a hard, brittle material registering 72.6 on the Rockwell " A " hardness scale. 硅是硬而脆的材料,根据Rockwell “ A” ” 硬度分度测值为72.6.
• Helene frowned and thought hard. 海伦颦眉苦苦思索.
• It can be very hard to think rationally when you're feeling so vulnerable and alone. 人在脆弱和孤独的时候很难理智地思考。
• The material requires higher temperatures and pressures to set hard. 这种材料需要有更高的温度和压力才能凝结变硬。
• Lean hard-training women athletes may men-struate less frequently or not at all. 身材瘦削而且训练艰苦的女运动员行经可能不那么频繁，或者根本不来月经。
• It's hard to maintain competitive pricing. 维持具有竞争力的定价非常困难。
• Why do you leave all the hard work up to your mother? 你为什么把所有难做的事都留给你母亲?
• It is proving hard to work out the value of bankrupt firms' assets... 清算破产公司的资产值其实很困难。
• Take it easy ! Don't go at It'so hard! 悠着点劲,别太猛了.
• The average man doing hard physical work has the best record, from the point of view of heart disease... 就心脏病而言，从事重体力劳动的普通男性罹患概率最低。
• Chinese officials hope that trade will pick up when the two countries switch to hard currency... 中方官员希望两国在转向使用硬通货后，贸易会有起色。
• It is hard to make out what criteria are used... 很难弄清楚使用的是什么样的标准。
• She is always hard up because she doesn't lay out her money wisely. 她总是缺钱花,因为她胡乱花钱.
• The President has been trying hard to hang onto power... 总统一直在设法抓住权力不放。
• Although they are pretending hard to be young, grey hair and cellulite give them away... 虽然他们费尽心思地扮年轻，但是花白的头发和赘肉却将他们的真实年龄暴露无遗。
• I was working hard to get into Cambridge. 我为能上剑桥大学而刻苦学习。
• The soldiers fought hard and began to gain ground. 士兵们奋力作战,开始占领敌军阵地.
• But ignorance and misinformation about the health hazards of beryllium die hard. 关于健康的破坏物铍的无知和误传是很顽固的.
• George is such a die - hard. He never gives up. 乔治非常顽固, 他从不会屈服.
• He's a hard man to deal with. 要跟他这个人做生意很难。