好词典

phase

UK //feɪz//US //feɪz//

词源

源自希腊语'phasis'(外观,现象),通过拉丁语'phasis'和法语'phase'传入英语,最初用于天文学指月相。

noun

❶ 指事物发展过程中的某个特定阶段或时期,通常具有明显的特征或变化。

“The project is now in its final phase.”

(这个项目现在处于最后阶段。)

“Adolescence is a difficult phase for many teenagers.”

(青春期对许多青少年来说是一个艰难的阶段。)

❶ 物理学中指波动或周期性现象在某一特定时刻的状态或位置。

“The two waves are out of phase with each other.”

(这两个波的相位不一致。)

“The engineer adjusted the phase of the alternating current.”

(工程师调整了交流电的相位。)

同义词:stage, period, step, state

verb

❶ 分阶段实施或引入某事物,通常指有计划地逐步进行。

“The new policy will be phased in over two years.”

(新政策将在两年内逐步实施。)

“They're phasing out the old model of the car.”

(他们正在逐步淘汰这款车的旧型号。)

同义词:introduce gradually, implement step by step, roll out

常见短语

phase out — 逐步淘汰或停止使用某物,通常指有计划地减少直到完全停止。

“The company is phasing out plastic packaging.”

(该公司正在逐步淘汰塑料包装。)

in phase — 指两个或多个周期性现象同步发生,或指计划与实际情况相符。

“The speakers need to be in phase for proper stereo sound.”

(扬声器需要同步才能获得正确的立体声效果。)

phase in — 逐步引入或实施某事物,通常指有计划地分阶段进行。

“The new curriculum will be phased in starting next semester.”

(新课程将从下学期开始逐步实施。)