周期性地的例句（周期性地在句子中的用法）

• Booms run in cycle. 景气状况周期性地出现.
• Economic crises recur periodically. 经济危机周期性地发生.
• Periodically , the lamellae become enlarged, forming flattened, membrane - enclosed vesicles called thylakoids. 片层周期性地扩展, 形成扁平的有膜为界的囊,称为类囊体.
• The geyser erupts periodically. 间歇泉周期性地喷发.