浦江海鸥
calamity最重 adversity和misfortune程度一样,可互换 mishap最弱 字典为证（柯林斯字典）： A calamity is an event that causes a great deal of damage, destruction, or personal distress. (FORMAL) Adversity is a very difficult or unfavorable situation. = misfortune A mishap is an unfortunate but not very serious event that happens to someone.
Lolita1015
companioninadversity[misfortune];afriendwhowentthroughdifficulttimestogetherwithsomeone;fellowvictim(s);friendshipmadeduringadversity;friendshipcementedinadversity;friendsinadversity[need];testedfriend全部都有患难之交的意思。例句：Webecomecompanioninmisfortunefromthenon.从那时起，我们就成了患难之交。
