2. speculate v. 推断; 猜测, 推测
例句：We don't know all the circumstances, so it would be pointless to speculate.
我们不了解所有的情况, 妄加推测是没有意义的。
3. power vt. 给...提供动力
例句：The tractor is powered by a diesel engine.
这台牵引机是用柴油机发动的。
4. disappointed adj.失望的
例句：I was completely disappointed to hear that.
听到那个消息后我彻底失望了。
5. capability n. 性能,功能
例句：The engineer explained the plane's technical capabilities.
工程师讲解了该飞机的技术性能。
6. boost vt. 促进, 改善, 激励
例句：We need a holiday to boost our spirits.
我们需要休假以激发士气。
7. outlook n. 展望; 前景
例句：The outlook for the economy is bright.
经济前景光明。
8. consumption n. 消费, 消耗; 消费[耗]量
例句：Consumption of oil has declined in recent years.
石油消耗量在最近几年下降了。
9. target n. (服务的)对象; (攻击的)对象
例句：What's the target readership of this paper?
这份报纸以哪些人为读者对象?
10. fierce adj. 强烈的, 极度的; 酷烈的, 激烈的
例句：What he said met with fierce opposition.
他的话语遭到激烈反对。
