缺氧

初次随登山科考队挺进海拔五千二百米雪线高寒地带的年轻地质调查队员，由于急性缺氧开始出现面部发白、胸闷头晕的不适。

chū cì suí dēng shān kē kǎo duì tǐng jìn hǎi bá wǔ qiān èr bǎi mǐ xuě xiàn gāo hán dì dài de nián qīng dì zhì diào chá duì yuán, yóu yú jí xìng quē yǎng kāi shǐ chū xiàn miàn bù fā bái, xiōng mēn tóu yūn de bù shì.

For the first time, a young geological survey team member with a mountaineering scientific expedition team advanced into the alpine zone of the snow line at an altitude of 5,200 meters. Due to acute hypoxia, he began to suffer from whitening of the face, chest tightness, and dizziness.

地质科考队员在人迹罕至的野外高原开展地质填图，克服了高寒缺氧和恶劣气候的重重考验。

dì zhì kē kǎo duì yuán zài rén jì hǎn zhì de yě wài gāo yuán kāi zhǎn dì zhì tián tú, kè fú le gāo hán quē yǎng hé è liè qì hòu de chóng chóng kǎo yàn.

The geological expedition team members carried out geological mapping in the inaccessible wild plateau and overcame numerous challenges of high cold, hypoxia and harsh climate.

密闭地下管道内部往往积聚着高浓度的硫化氢毒气，贸然进入极易引发缺氧窒息危险。

mì bì dì xià guǎn dào nèi bù wǎng wǎng jī jù zhe gāo nóng dù de liú huà qīng dú qì, mào rán jìn rù jí yì yǐn fā quē yǎng zhì xī wēi xiǎn.

High-concentration hydrogen sulfide poisonous gas often accumulates inside closed underground pipelines. If it enters rashly, it can easily lead to the risk of hypoxia and suffocation.