Use a humidifier in heated rooms to prevent dry air irritating your throat.在开暖气的房间里可用加湿器，防止吸入干燥空气造成喉咙不适。Steam humidifier are often used because of their simplicity.蒸气加湿器之所以常为人们所采用,主要是由于它很简单.Avoid dry atmosphere by using ...
You said you'd come, why did you renege on your promise?你说你要来的, 为什么要背信弃义?Any more colourful candidate could renege on a deal.任何不同政见的候选人都可能就此交易而报复.If you renege again, I am going to gut you.如果你再食言, 我会挖出你的内脏!...
human immunodeficiency virus or HIV人体免疫缺陷病毒，即HIVThese conclusions have emerged from observations of persons exhibiting different states of immunodeficiency.这些结论是从观察人的各种免疫缺陷症状得出的.About 50 % of Acquired Immunodeficiency Sy...