Vocabulary

1.ultrasonic

sound waves are too high for humans to hear
ex：The doctors gave him an ultrasonic brain scan.
2.gadget

a small, useful, and cleverly-designed machine or tool
ex：Everyone loves gadgets.
3.tout

to praise something or someone in order to persuade people that they are important or worth a lot
ex：People said that he touted for his mother and sister.
4.arguably

used when stating an opinion or belief that you think can be shown to be true
ex：John sings very well though peter is arguably the better actor．
5.augment
to increase the size or value of something by adding something to it
ex：Augmenting financial control and improving school running.