系 (xì): to connect, to relate to, to tie up

这两个事件之间存在着密切的联系。

Zhè liǎng gè shìjiàn zhī jiān cúnzài zhe mìqiè de liánxì.

There is a close connection between these two events.

美财长:与贸易夥伴联系 各国盼维持既有关税协议

měi cái cháng : yǔ mào yì 夥 bàn lián xì gè guó pàn wéi chí jì yǒu guān shuì xié yì

U.S. Treasury Secretary: Liaising with trading partners Countries hope to maintain existing tariff agreements

...中山大宅跟北方煮锅贴过年 圈中老公杜燕歌系清朝皇族后裔

. . . zhōng shān dà zhái gēn běi fāng zhǔ guō tiē guò nián juān zhōng lǎo gōng dù yān gē xì qīng cháo huáng zú hòu yì

... Zhongshan Mansion and the north cook potstickers for the New Year, and her husband Du Yange in the circle is a descendant of the Qing Dynasty royal family

...场外音丨陆玮鑫:冬奥会需引入“鹰眼挑战”系..

. . . chǎng wài yīn 丨 lù 玮 鑫 : dōng ào huì xū yǐn rù yīng yǎn tiāo zhàn xì . .

... Off-site sound丨Lu Weixin: The Winter Olympics need to introduce the "Eagle Eye Challenge" system:

中外交流|塞尔维亚举行系列新春庙会活动庆祝中国年

zhōng wài jiāo liú sāi ěr wéi yà jǔ háng xì liè xīn chūn miào huì huó dòng qìng zhù zhōng guó nián

Sino-Foreign Exchange|Serbia celebrates Chinese New Year with a series of Lunar New Year temple festivals

学习规划建议每日问答丨构建智能化军事体系

xué xí guī huá jiàn yì měi rì wèn dā 丨 gòu jiàn zhì néng huā jūn shì tī xì

Study Planning Tips: Daily Q&A丨Building an Intelligent Military System

你是不是跟长岛家有关系的？

Nǐ shì bù shì gēn Chángdǎo jiā yǒu guānxì de?

Are you related to the Nagashima family?

您的家族史跟中医有没有关系？

Nín de jiāzú shǐ gēn Zhōngyī yǒuméiyǒu guānxi?

Does your family background involve Chinese medicine?

你还和你的高中同学保持联系吗？

Nǐ hái hé nǐ de gāozhōng tóngxué bǎochí liánxì ma?

Do you keep in contact with your high school classmates?

汤姆那里有联系过你吗？

Tāngmǔ nàli yǒuliánxì guo nǐ ma?

Have you heard from Tom?