形容詞 changeable:

1. capable of or tending to change in form or quality or nature
   同義詞：mutable
2. such that alteration is possible; having a marked tendency to change
   同義詞：changeful
3. subject to change
   同義詞：uncertain, unsettled
4. varying in color when seen in different lights or from different angles
   同義詞：chatoyant, iridescent, shot

1. It's so changeable at this time of year.
   這段時(shí)間天氣變化無常。
2. His temper's is changeable this week, so do not annoy him.
   這星期他脾氣變化無常，所以不要惹他生氣。
3. The small city has the climate that is changeable in the extreme.
   這座小城有變化多端的氣候。

change.a.ble

adj.（形容詞）
Liable to change; capricious:
易變的：很可能變化的；易變的：
例句：
changeable weather.
易變的天氣

Being such that alteration is possible:
可改變的：處于可能發(fā)生變化的狀況下的：
例句：
changeable behavior.
可改變的行為

Varying in color or appearance when seen from different angles:
顏色有變化的：從不同角度看顏色或外表不同的：
例句：
changeable silk.
變色絲綢

【引伸】
change.abil.ity 或
change.ableness
n.（名詞）
change.ably
adv.（副詞）