salutary：
釋義：
adj. 有益的，有益健康的
構(gòu)詞：
salut=salv救助+ary……的→救助[身體]的→有益的
例句：
The team's defeat is a salutary warning before the World Cup.
這次失利是在世界杯比賽之前對(duì)整個(gè)隊(duì)的一個(gè)有益警示.
The plant proved salutary.
那植物證明是有益于人體健康的.
It was a salutary experience to be in the minority.
敵眾我寡時(shí)倒是可以磨煉人。
sad：
釋義：
adj. 悲哀的，令人悲痛的
例句：
It was sad to see all grandmother's lovely things being auctioned off.
眼看著祖母那些可愛(ài)的東西全都被拍賣(mài)掉,心里真不好受.
When I am sad, I take refuge in remembering happier times.
當(dāng)我悲傷時(shí), 就從回憶過(guò)去快樂(lè)的時(shí)光中尋求安慰.
When a close friend dies, we can't help but feel sad.
當(dāng)一位親密的朋友去世時(shí), 我們不能不難過(guò).