1. Even so, most people's productivity does eventually decline with age; and pay needs to reflect this falling-off. 虽然如此，大多数人的生产效率还是会随着年龄的增长而降低；而工资则需要能够反映出这种下降趋势。
2. During the process of correct installation and application, there will be no cracks, decolorization or falling-off. 在正确的安装使用过程中不会产生裂纹，绝对不会脱色或小片脱落。
3. You just have to convince him that you are prepared to take a higher risk than he is of accidentally falling off the cliff. 你只需要说服他，你已经准备好承担比他意外掉下悬崖更大的风险。
4. He'd had a very royal accident. He'd broken his leg falling off a horse, and he had a terrible limp. 他遭遇一场非常严重的事故。他从马背上摔下来断了一条腿，而且他的腿瘸得很厉害。
5. Water enters a lake from inflowing rivers, from underwater seeps and springs, from overland flow off the surrounding land, and from rain falling directly on the lake surface. 湖中的水来自于河流的水、地下渗入的水和泉水、从四周地面流进来的水，还有直接降到湖面的雨水。
