您要查找的是不是：
- sign of free gas (腹腔)游离气体征
- Drivers lined up for blocks early this morning to get their 40 dollars worth of free gas. 司机们一早就排起了长队去那个加油站获取价值40美元的免费汽油。
- Many clathrate deposits sit atop grand reservoirs of free gas, so that drilling might unleash a methane burp of enormous size, with environmental impacts to match. 很多的甲烷晶状体附着物位于海底内陆蓄存池的上方，所以随着它的开发会打一个巨大无比的“嗝”-----这是环境的冲击造成的。
- Gas hydrates were formed due to the availability of free gas within the diapir structures from the bottom of gas hydrate stability zone up to the sea floor. 在底辟构造中，由于游离气体的向上迁移，在整个水合物稳定域中从下到上，直至海底都可能形成水合物，从而使我们有机会使用重力采样器这样的设备也能采获天然气水合物样品。
- Results The main radiopraphic features of subpulmonic effusion included pseudodiaphragm sign, heart shadow silhouette sign, double diaphragm sign and sign of free fluid. 结果肺底积液的主要X线表现是假膈征、心淹征、双膈影征和变换体位液体弥散征象。
- There is no sign of a let-up in the hijack crisis. 绑架危机毫无缓和迹象。
- Results:The main radiographic features of subpulmonic effusion inclu ded pseudodiaphragm sign,heart shadow silhouette sign,double diaphragm sign and sign of free fluid. 结果：肺底积液的主要X线表现是假膈征、心淹征、双膈影征和变换体位液体弥散征象。
- Dark clouds are a sign of rain or snow. 乌云是雨或雪将至的预兆。
- The politician cops out on the issue of free trade. 那政客对自由贸易的问题只是一味逃避。
- He wore crape as a sign of mourning. 他戴着黑纱表示哀悼。
- There's no sign of him mending his ways. 看不出他有改进生活方式的迹象。
- The rising level of crime is a sign of the times. 犯罪率增高是这一时代的特徵。
- He removed his hat as a sign of reverence. 他脱下帽子表示敬意。
- They are advocates of free trade. 他们是自由贸易的倡导者。
- Shaking the head is a sign of negation. 摇头表示否认。
- Hong Kongers have become comfortable with such brawls,just as one who stays long enough at a salted fish stall gets used to the stink. And they take the noisy shows as a sign of free speech. 港人“入鲍鱼之肆，久而不闻其臭”，更自诩为言论自由的表征。
- Sceptres are carried by kings as a sign of power. 国王所持的权杖是权力的象征。
- Hong Kongers have become comfortable with such brawls, just as one who stays long enough at a salted fish stall gets used to the stink. And they take the noisy shows as a sign of free speech. 港人“入鲍鱼之肆，久而不闻其臭”，更自诩为言论自由的表征。
- An obstacle to or a censoring of free speech. 言论限制对言论自由的审查或言论自由的障碍
- Puffiness round the eyes is a sign of poor health. 眼圈浮肿是不健康的样子。
