The rise in cases underlines the urgent need to conduct high-quality immunization campaigns to rapidly boost population immunity levels.
病例的增加强调了迫切需要开展高质量的免疫运动以便迅速增强人群免疫水平。
2
To receive high frequencies, which can boost the data rate, submarines have to surface and risk detection.
要接收高频信息，只有提高传输速率，但这样潜艇很容易被探测到。
3
This trend, combined with investor assumptions that oil prices will remain high, have helped boost prices further, which has in turn fed more investor speculation in the market.