Today's Sentence
Start recording
Max 6 minutes
Contact tracing is part detective work, part widely used public health method, and experts believe, a key strategy in fighting the Coronavirus pandemic.
Original Video：
CNN 10: Can Contact Tracing Help us Overcome COVID-19?
Key Vocabulary
1. average a single value (such as a mean, mode, or median) that summarizes or represents the general significance of a set of unequal values
average
[ˈævərɪʤ] (n.) a single value (such as a mean, mode, or median) that summarizes or represents the general significance of a set of unequal values
2. trace to discover by going backward over the evidence step by step
trace
[treɪs] (v.) to discover by going backward over the evidence step by step
3. paradox a statement that is seemingly contradictory or opposed to common sense and yet is perhaps true
paradox
[ˈpɛrəˌdɑks] (n.) a statement that is seemingly contradictory or opposed to common sense and yet is perhaps true
0 participants have completed today's challenge