1704958550
The doctor’s work is to heal the sick．医生的工作就是治疗病人。
1704958551
1704958552
sick还可表示“恶心的”、“（想）呕吐的”：
1704958553
1704958554
The smell made him sick．这气味使他恶心。
1704958555
1704958556
He has been sick several times today．他今天吐了好几次了。
1704958557
1704958558
The baby was sick twice in the car．宝宝在车上吐了两次。
1704958559
1704958560
呕吐还可用vomit或throw up表示：
1704958561
1704958562
Soon she began to vomit．不久她开始呕吐。
1704958563
1704958564
I think I’m going to throw up．我想我要吐了。
1704958565
1704958567
814 sightseeing
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1704958569
sightseeing表示“观光”、“游览”，为不可数名词：
1704958570
1704958571
You and I can do some sightseeing．你和我可以去游览一番。
1704958572
1704958573
We spent three days in sightseeing．我们花了三天时间观光游览。
1704958574
1704958575
可用作状语：
1704958576
1704958577
They spent a lot of the holiday sightseeing in London．他们用了假期的好多时间在伦敦参观游览。
1704958578
1704958579
Let’s go sightseeing．咱们去参观游览吧。
1704958580
1704958582
815 silk—silken—silky
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1704958584
silk为名词，指“丝绸”：
1704958585
1704958586
She sewed it with thread made from silk．她用丝线缝好它。
1704958587
1704958588
The dress was (made of) silk．这件连衣裙是绸子（缎子）做的。
1704958589
1704958590
Let me have ten yards of the finest silk．给我十码最好的绸子。
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1704958592
silk也可用作定语：
1704958593
1704958594
She sewed the silk dress with silk thread．她用丝线缝绸子衣服。
1704958595
1704958596
silken为形容词，表示“丝质的”或“像丝一般柔滑光亮的”：
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1704958598
The king wore silken robes．国王穿着丝质的袍子。
1704958599
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