1·I stopped the ball and kicked it hard back to the playground.
我把球停住，使劲把球踢回操场。
2·At first it pushed us so hard back into our seats that we could not say anything to each other.
起初这种压力使劲把我们向后推倒在座位上，以致于我们彼此不能说话了。
3·The text-books instruct us to prune it hard back ot the old wood immediately after it has finished flowering;
教科书建议我们，当它一开完花，就立即将它修剪至只剩老枝。
4·I have to get up at 5.20 every morning, inside the first hard back at home, to school in the back, or will not be back.
每天早上我都要5.20起床，在家里面先使劲的背，到学校在背，还是不会背。
5·First, I put dirty clothes into the pot, and then they put a lot of detergent and laundry detergent, after wet my hard back and forth on a washboard rubbing.
首先，我把脏衣服都放进了盆子里，然后又放了好多的洗衣粉和洗衣液，打湿后我使劲在洗衣板上来回搓动。
6·Joe has a bad back so we have a hard bed.
乔的背不好，所以我们睡硬板床。
—— 《柯林斯英汉双解大词典》
7·I have no hard data to back it up, but my experience suggests this is reasonable.
我没有确实的数据来支持它，但我的经验表明这是合理的。
8·Back in the 1900s, some stop signs were yellow because it was too hard to see a red sign in a poorly lit area.
早在20世纪初，一些停车标志是黄色的，因为在光线不好的地方很难看到红色标志。
9·She swallowed hard and forced back her tears.
她使劲咽了一下口水，强忍住了眼泪。
—— 《牛津词典》
10·He deserves a pat on the back for all his hard work.
他工作兢兢业业，值得嘉许。
—— 《牛津词典》