sink/ sɪŋk /

1.noun [c] 
洗涤槽

2.vt.[+ship] 
使下沉

3.vt.[+well] [ mine] 
挖掘

4.vi.[ship+] 
(in water) 沉没

5.vi.[object+] 
下沉

6.vi.[ground] [ building] [ foundation+] 
(subside) 下陷

7.vi.[level] [ price+] 
(drop) 下跌

to sink sth into sth
 [+teeth,claws,knife,needle] 将某物插入某物
to sink to...
 [prices,pay increases etc+] 下降至…
the sun was sinking
太阳落山了
she sank to her knees
她跪下了
to sink into a chair
瘫在椅子上
to sink into depression/a coma
陷入消沉/昏迷
my heart sank
我心头一沉
her voice sank to a whisper
她的声音减小成耳语