Question

periodic adj.周期的；定期的；间歇的；完句的 (1) 很久以前, 我们就知道行星的周期运动。(2) 为什么版本号不是按照任何特定的周期序列?(3) 医生定期到这家进行拜访,检查婴儿的健康。(4) 我们公司定期有人事变动。 The word "period" is the key to the meaning of periodic, because something periodic can happen only after a period of time. Periodic visits to the vet are a good way to make sure that your pet stays healthy. Why not just use "occasional," you ask. Good question. Periodic implies that the thing will continue to happen over and over—periodically. Like comets and victories by the Yankees. These things are reliable, if periodic.

Accepted Answer

英 [ˌpɪəri'ɒdɪk] 美 [ˌpɪri'ɑːdɪk] (1) Long long ago, we knew the periodic motion of a planet.(2) Why are the version numbers not in any particular periodic sequence?(3) The doctor made periodic visit to the house to see if the baby was all right.(4) There is a periodic reshuffle of our company staff. Something periodic happens only occasionally, after a "period" of time. Lunch happens every day, after 4th period, so it's safe to say it's periodic. Something periodic doesn't have to happen at regular intervals, though. 1[ADJ 形容词]间发性的；定期的；周期的 Periodic events or situations happen occasionally, at fairly regular intervals.   [usu ADJ n]Periodic checks are taken to ensure that high standards are maintained.定期检查以确保维持高水准。...periodic bouts of illness.周期性发病

英语单词	periodic
英美音标	英 [ˌpɪəri'ɒdɪk] 美 [ˌpɪri'ɑːdɪk]
中文释义	adj.周期的；定期的；间歇的；完句的
英语例句	(1) Long long ago, we knew the periodic motion of a planet. (2) Why are the version numbers not in any particular periodic sequence? (3) The doctor made periodic visit to the house to see if the baby was all right. (4) There is a periodic reshuffle of our company staff.
中文例句	(1) 很久以前, 我们就知道行星的周期运动。 (2) 为什么版本号不是按照任何特定的周期序列? (3) 医生定期到这家进行拜访,检查婴儿的健康。 (4) 我们公司定期有人事变动。
vocabulary简明	Something periodic happens only occasionally, after a "period" of time. Lunch happens every day, after 4th period, so it's safe to say it's periodic. Something periodic doesn't have to happen at regular intervals, though.
vocabulary扩展	The word "period" is the key to the meaning of periodic, because something periodic can happen only after a period of time. Periodic visits to the vet are a good way to make sure that your pet stays healthy. Why not just use "occasional," you ask. Good question. Periodic implies that the thing will continue to happen over and over—periodically. Like comets and victories by the Yankees. These things are reliable, if periodic.
柯林斯解释	1 [ADJ 形容词]间发性的；定期的；周期的 Periodic events or situations happen occasionally, at fairly regular intervals. [usu ADJ n] Periodic checks are taken to ensure that high standards are maintained. 定期检查以确保维持高水准。 ...periodic bouts of illness. 周期性发病

Periodic Happen Long Occasionally Period Time Regular Good