2.16

1，复习

2,mat,

3,obstruct,block

4,overcharge,charge more money.

5,partly,some degree,not complete.

6,pollen,/ˈpɑː.lən,

powder produced by flower

7,predominant,

prime

8,prevalent,/ˈprev.əl.ənt/

existing very commonly.

9,protagonist,prime people

or 

an important supporter for an idea

10,radiation

a form of energy from nuclear reaction

11,rehabilitate

make patient become commom.

12,renovate,

[ˈrenəveɪt],to repair ,improve something

13,sapphire,[ˈsæfaɪər]

a precious stone ,usually blue.

14,scatter,

move in all directions

15,sensual,

express sexually

16,shellfish

sea creatures live in shell

17,shuttle 

travle between two places

18,sodium

salt chemical

19,spice flavour make you exciting.

20,stretch,to cause something to reach

21,strive,work hard

22,stylistic

relating aking of style of do something

23,surplus,more than needed

24,sweep,clean.

25,syllable,a unit of music.

26,temporary,not lasting.

27,tow,tow a car

28,unearth,to discover something in tht ground

29，varnish,liquid to protect surface

30,biological,about creatures