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show off炫耀, 卖弄
例句：He never shows off.
他从不卖弄自己的才能。
She likes to show herself off.
她喜欢自我炫耀。
2.They require two thousand sixteen model vehicles to get an average of fifteen kilometers to a liter of gasoline.
an average of平均有(跟数词)
例句：An average of two students are absent each day.
每天平均有两个学生缺席。
3.And manufacturers are rushing to get electric vehicles and hybrids on the market.
rush to(使某人)急速去
例句：Ambulances rushed the injured to hospital.
救护车把受伤的人火速送到医院。
Fellow workers helped me rush her to the hospital.
我们单位的工人同事们帮助我尽快把她送到医院。
4.But all-electric cars that the public can afford to buy are no longer something for the distant future.
no longer不再, 已不, 不复, 再也不
例句：He was long a famous musician, but he plays no longer.
他成为有名的音乐家已很久了, 但他现在不演奏了。
The city's water supply is no longer adequate for its need.
这个城市的供水已不敷需求。
