It's disbennifit to become protected film if change the velocity of flow frequently. 频繁改变水的流速不利于在冷却器材料表面形成保护膜，而保护膜对于防腐蚀是至关重要的。
He used to practise usury frequently. 他过去经常放高利贷。
We had to pause frequently for breath. 我们不得不经常停下来喘口气。
Consonants are frequently assimilated to neighboring consonants. 辅音往往被其邻近的辅音同化。
The star boozed frequently in his younger days. 该明星在年轻时经常酗酒。
Bill got the boot for frequently coming late. 比尔因经常迟到而被解雇。
They are frequently admonished for their failure to act quickly. 他们因行动迟缓而多次受到责备。
This type of coaxial cable is frequently referred to as Thicknet. 这种同轴电缆常称为粗同轴电缆(Thicknet)。
Now he must deal with Washington's gigantic and frequently doltish permanent establishment. 但是现在他必须和华盛顿的庞大但有点愚蠢的既有体制打交道了。
The train stopped frequently at lonely little stations,which resulted in a sleepless night. 火车不时在孤寂的小站停下来,这使我一夜难眠。
Bordure or Border - Frequently adopted as a "difference" between relatives bearing the same arms. 图案边界的标志物-一般用以作为一种标示，区别那些大体相近的纹章。
Young stems terete to frequently 4-angled or subalate, glabrous, puberulous, pubescent, or tomentose, often glabrescent. 嫩茎圆柱状到经常地四棱形或略似翼的，无毛，被微柔毛，短柔毛，或被绒毛的，通常后脱落。
Undescended testis is frequently accompanied with the anomalies of the spermatic cord,gubernaculum testis,processus vaginalis,and epididymis. 隐睾常伴有精索、睾丸引带、鞘状突、附睾等异常。
Brougher clashed frequently with Browder. 布鲁尔和布劳德经常发生冲突。
To access food sources or defend the territory,agonistic behavior,mostly in a form of ritualization,was frequently displayed. 为获得食物和保卫领域，黑颈鹤之间(或与灰鹤之间)常发生争斗，争斗的主要形式是仪式化威胁。
The characteristic is looked that resembles stockily but actually insincere, frequently quarrels with the same table of Pakistan. 特点看似敦实却不厚道，经常和同桌巴基斯坦吵架。
Undercrossing tunnels are frequently constructed by the shield-driven method in metro projects.Shield tunneling affects the existing tunnel inevitably. 摘要在地铁工程中，常采用盾构法修建正交下穿隧道，新隧道的掘进不可避免地对既有隧道产生影响。
This neuronal loss is frequently accompanied with astrocytosis,gliosis and specific neuropathologic markers,such as Lewy body in Parkinson's disease. 这种神经元的丢失通常伴有星形胶质细胞增生、神经胶质过多症以及特定的神经病理标记,如帕金森病的路易小体。
94. The betatron and synchrotron tunes are measured frequently during the period of the machine operation and machine studies. 在加速器的运行和机器研究过程中,需要经常对束流振荡频率进行测量.
Klebsiella pneumoniae was the pathogen most frequently encountered.Seven of the ten patients had underlying disease, and hemoglobinopathy was frequently associated. 十人中有七人本来就有其他疾病，尤其是血液疾病使他们易罹患肝脓疡。
Some humans hunt more frequently than gray wolves.
人类的捕猎次数多于灰狼。
历年英语六级听力真题（含译文）
It does erupt frequently. But those eruptions are usually minor.
它虽然确实爆发频繁，但是那些通常都是小规模的爆发。
外贸英语话题王
But actually we don't use it frequently.
不过实际上很少使用这种方式。
2022卡塔尔世界杯
But then, why can't it happen more frequently?
但是，为什么它不能更频繁地举办呢？
VOA Standard 2013年10月合集
Meteors and asteroids collide with this planet fairly frequently.
流星，小行星和这颗行星的碰撞相当频繁。
老外最想聊的100个口语话题
You changed jobs again? Why do you move so frequently?
你又换工作了？怎么跳的这么频繁啊？
英语速学指南
And the final one is about reviewing your progress frequently.
最后一点是要经常回顾自己的进步。
Animation Basics （视频版）
And the cancer cell divides even more frequently and recklessly.
而癌细胞分裂得 更加频繁也更不受限制。
科学60秒-科学美国人 2020年8月合集
And in recent years they're being seen more frequently.
最近几年它们越来越频繁地出现。
流利说
Brushing your teeth frequently and regularly can help prevent cavities.
经常刷牙可以预防蛀牙。
英语百科
Frequentative
（重定向自Frequently）
In grammar, a frequentative form (abbreviated freq. or fr.) of a word is one that indicates repeated action. The frequentative form can be considered a separate but not completely independent word called a frequentative. The frequentative is no longer productive in English, but it still is some languages, such as Finno-Ugric languages (Finnish or Hungarian), Balto-Slavic (Lithuanian, Russian and Polish), Turkic etc.,
近义、反义、联想词
近义词
adv.
frequent
反义词
n.
infrequently
解析
always 总是，永远。语气最强，指在一切时候，没有例外。 often 经常，语气弱于always,侧重动作发生的次数具有经常性，具体时间意味不强。 usually 通常，通例地，指习惯性动作，频度仅次于always，较often大，偶尔有间隔。 frequently 时常，经常，与often同义，可通用，但较正式，强调次数频繁。 repeatedly 屡次，强调次数多，但反复的频率不一定均匀。 regularly 用于修饰经常而有规律性的动作。