v.交替( alternate的过去式和过去分词 )；（使）交替， （使）轮换； 双语释义：adj.(形容词)轮流的,交替的 (of two things) happening by turns间隔的 every second代替的 instead of another; alternativev.(动词)vi. & vt. (使)交替,(使)轮换 (cause to) follow by turns英英释义： alternaten.someone who takes the place of anoth