慢速英语:WHO: Almost 13 Million Babies Missed Vaccines in 2016
日期:2017-07-22
Words in This Story
routine – adj. done very often
immunization – n. a vaccine given to someone to prevent infection by disease
stall – v. to stop and not move forward because of a problem
raise the bar – phrase. increasing the standard by which something will be judged
defect – n. a problem or fault that makes something not perfect
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