Day 875 
--- Proverbs ---
※ 原句 ※
He knocks boldly at the door who brings good news.
敲门响的人必然带来好消息。
--- Oxford dictionary ---attentive adj.
①listening or watching carefully and with interest
注意的；专心的；留心的
an attentive audience
聚精会神的听众
②helpful; making sure that people have what they need
关心的；肯帮忙的
The hotel staff are friendly and attentive.
旅馆人员友好而且照顾周到。
attentive to sb/sth
Ministers should be more attentive to the needs of families.
部长们应该更关怀家庭的需求。
attentively adv.
attentiveness n.
attenuate v.
attenuate sth
(formal) to make sth weaker or less effective
使减弱；使降低效力
The drug attenuates the effects of the virus.
这药能减轻病毒的作用。
attenuation n.
attenuated adj.
①made weaker or less effective
减弱的
an attenuated form of the virus
毒性已衰减的病毒
②(of a person) very thin
消瘦的
