1.A car would be a white elephant to him,because he can't drive it.
汽车对他一点用都没有，因为他不会驾驶。
white elephant:
(idiomatic) A possession that is unwanted or is a financial burden; an unprofitable investment.
2.The company's marketing rep was giving out pens and mugs-the usual freebies.
这家公司的市场部代表正在分发钢笔和水杯一一这些常见的赠品。
You will always get some freebies when you buy cosmetics.
买化妆品时你总会得到一些赠品小样。
freebie:
(informal) Something which is free; a giveaway or handout.
3.Manufacturers still build luxury cars with all the bells and whistles.
厂商仍然用华而不实的点缀品来制造豪华轿车。
Some customers are always attracted by bells and whistles of the products.
bells and whistles:
(idiomatic) Extra features added for show rather than function; fancy additions or features.
一些消费者总是被产品的附加功能所吸引。
4.ls that the real thing or a knock-off?
那件是正品还是赝品?
knockoff:
An imitation of something, particularly a well-known product, usually lower in quality and price than the original.
