They know that a seal swimming under the ice will keep a breathing hole open by its warm breath, so they will wait beside the hole and kill it.

A polar bear may sit for hours at a breathing hole, waiting for a seal to surface.

一头北极熊会在呼吸口边坐上数个小时等待海豹出来换气。

And tourists breathing hole on the closed section of the humidity will have an appreciable effect.

而游客的呼吸对封闭洞段的湿度也有一定的影响。

The only way for air to go inside HDA is through the breathing hole.

唯一的途径空气进去HDA的是通过呼吸孔。

Objective: To investigate the treatment of pediatric asthmatic bronchitis attack of breathing space.

目的：观察治疗小儿喘息性气管炎喘息发作的疗效。

The Microcomputer Control System for the Breather Bag Sewing Machine

空气过滤纸袋缝纫机的单片机控制系统

The Improvement of Crankcase Breather for 4105 Diesel Engine

4105柴油机曲轴箱通风装置的改进

In this paper first analyses design calculation for axle curved vane type cyclone breather, then modifies some of the calculation for the vane shape and optimizes the design parameters for the vane shape and gives a brief design calculation.

分析了旋流煤粉燃烧器轴向弯曲叶片型旋流器的设计计算，修改了部分叶形计算，优化了设计参数的选取，提出了叶形主要参数的适配性，整理出了合理简化的计算步骤。

The Concept Design of Tank's Breather Valve

储油罐呼吸阀的概念设计

Design and Characteristics of Breather Valve and its New Type Development

浸油型弹簧式机械呼吸阀呼吸阀的工作特性和新型呼吸阀的开发

Study on Breather Loss Mechanism of Oil Tank

储油罐小呼吸损耗机理研究

The Problems Discussion of Breather Loss Test of Crude Tank

原油储罐呼吸损耗测试中的问题探讨

While the amounts reported here are OK for older people, children still need to do an hour of activity every day to be healthy and that needs to be hard enough to make them breathe hard and preferably feel hot.

尽管报道中提到的运动量适合老年人，儿童要保持健康还是得每天运动一小时，增加运动强度，用力呼吸，最好能够全身发热。

In visceral pain, its quality is obscure, its accurate position in body is unclear, the response of body is greatly intense, such as sudation, tachycardia, breathe hard et al.

内脏痛的性质模糊，定位不明确，机体的反应强烈，可引起出汗、心悸气短。

At the mention of melanie, Scarlett began to breathe hard and could scarcely restrain herself from crying out the whole story, that only honor kept Ashley with melanie.

一提到媚兰，思嘉的呼吸便开始急促起来，差点忍不住要吐露全部真情，告诉他艾希礼只是为了保全面子才同媚兰在一起的。

The main clinical manifestations of NCHD were heart murmur ( 82.0%), breathe hard ( 62.3%), continuous cyanosis ( 34 4%).

新生儿先心病的临床表现主要为心脏杂音（82.0%）、气促（62.3%）、持续性青紫（34.4%）。

44 cases with breathe hard;

气短44例；

Make the city breathe freely& Discussion about Previous concrete used in Ecological road pavement

让城市自由呼吸&关于透水混凝土用于城市生态道路铺装的探讨

Its vision is a world where all people breathe freely.

该联盟的构想是建设一个人人享有自由呼吸的世界。

Appended in cosmetics, it can keep wet, breathe freely, clear up toxin and defend ultraviolet radiation et al;

添加于化妆品中，它具有保湿、透气、消除毒素、防紫外线等作用；

But this abomination agent, development idea is novel, it can waterproof and can breathe freely, like healthy skin, so it is also called respiratory waterproof coating.

而本憎水剂，研制思路新颖，它既能防水又能透气，就像健康人的皮肤，故又被称为呼吸性防水涂料。