常常

However, using the Hi-Lo Evac endotracheal tube (Hi-LoEvac; Mallinckrodt; Athlone, Ireland), dysfunctionof the suction lumen and subsequent failure to aspirate thesubglottic secretions are common.

然而使用 Hi-Lo Evac 型气管导管(Hi-LoEvac； Mallinckrodt； Athlone，爱尔兰)，吸引管常常发生异常，且随后不能抽吸声门下分泌物。

With the development of science and technology, sensitive, rapid, reproducible, simple and accurate analytical methods are required for the determination of trace elements in geological, biological and environmental samples. The direct determination of extremely low concentration of trace element with modern atomic spectroscopic method, such as atomic absorption spectrometry is so difficult. On one hand, the limitations are associated not only with the insufficient sensitivity of these techniques but also with matrix interference.

随着科学技术技术的发展，在进行地质、环境、生物等样品中痕量金属元素的测定时，常常要求达到ppb级的水平，虽然火焰原子吸收分光光度法具有很高的灵敏度，但是要直接测定这些样品中的痕量组分却很难，这是因为，一方面，样品本身的物理化学状态有的不适合直接测定，或组分的含量低于分析方法的灵敏度；另一方面是存在基体干扰。

I used to feel boiling outrage about mothers who let their semi-feral teenage children mill around the streets causing havoc, until I spoke to some of them and realised that many were entirely au fait with the concept of parental responsibility but were powerless to control their teenagers.

我过去常常对那些放任自己的野小孩儿在街上搞破坏的母亲们充满怒火，知道我和她们其中一些聊过以后我才意识到她们许多对于家长责任这个观念是多么的精通，虽然他们并不能控制住他们的小孩儿。

My oldest son called demanding to know what had become of a particular rock in Audubon Park where I used to perch him as a toddler.

我的大儿子挂通电话，想知道奥杜本公园的那块岩石怎么样了，以前我常常把他放在上面歇息。

For this reason it is often called autocorrelation.

因为这个原因，它常常被称作是自相关。

Too often assimilated to a group called the Hanoi Triad, Minh Thanh was marked by the influence of the teachings of Truong Tan, the first avant-garde artist of Vietnam during the era of the Doi Moi (1986), the opening of the nation.

出于表达的方便，人们常常把他等同于一个俗话所说的"河内三人帮"的艺术团体。阮明成是张晋的学生，老师的教导给他的艺术打下了深深的烙印。张晋是越南改革开放时代（1986年）第一个先锋派的艺术家。

Qinghe days in the weather, I can see where it was often in the air clothes blankets, reading newspapers, Shilong flowers, aviculture played cat and even rope skipping kick ball, one Pastoral scenery.

在天气晴和的日子里，我常常可以看见那里有人在晒衣服被褥、读书看报、侍弄花草、养鸟逗猫甚至跳绳踢球，一派田园风光。

These two phenomena often are of the same order of magnitude, and must be considered integratively in AVO interpretation.

这两种现象常常具有相同的数量级，AVO解释中应对它们进行综合考虑。

People are often vain of their passions,even of the worst,but envy is a passion so timid and shame-faced that no one ever dare avow her.

人们常常自负于他们的激情，甚至是罪恶的激情；而嫉妒却是一种既羞怯又羞耻的激情，以致于没有人敢于坦诚自己拥有它。

The controller of the enterprise, its life actually mostly alone, because their working property decided they have Qian Youquan but because by the person awe-stricken, and an eccentric person that the star outside often be being regarded to be to come from takes in luxurious office however.

企业的管理者，其人生其实大多孤独，因为他们的工作性质决定了他们有钱有权但因为被人敬畏，而常常被人看作是来自外星却坐在豪华办公室里的怪物。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。