Because COVID-19 spreads so quickly to so many people, it's almost impossible to trace all contacts with phone calls.

因为新冠肺炎能如此之快地传播给众人，所以几乎不可能通过电话追踪到所有接触过的人。

youdao

Selecting the customer name from a list of all contacts at that company

从一个包含该公司所有联系人的列表中选择客户名称

youdao

All contacts have been placed under medical observation and remain healthy to date.

所有接触者正在接受医学观察，目前均身体健康。

youdao

Morrell says such disagreements are all the more reason to have consistent contacts between the U.S.and Chinese military and defense establishments.

VOA: standard.2009.10.27

Mr Jones said a new unit to handle all contacts for the the department had been launched on Monday.

BBC: Cheshire East Children's Services 'inadequate'

He added that all contacts with the Muslim-Croat federation have been suspended, yet he didn't want to sever ties completely.

CNN: Bosnian Serb-NATO rift threatens accord

As the Co-Founder and CEO of Palantir Technologies, I have directed the company to sever any and all contacts with HB Gary.

FORBES: Palantir Apologizes For WikiLeaks Attack Proposal, Cuts Ties With HBGary