1.alternative a.兩者擇一的;供選擇的
We have the alternative plans of having a picnic or taking a boat trip.
我們在去野餐或者去乘船旅游兩個計劃中只能選一。
2.placebo n.安慰劑;安慰話
The placebo has been found to work with a lot of different cases.
人們已發現安慰劑能在很多不同的病例中發揮作用。
3.complementary a.補充的;互補的
His personality is complementary to hers.
他的個性與她的相反相成。
4.rigorous a.嚴格的;嚴厲的
The planes have to undergo rigorous safety checks.
這些飛機得接受非常嚴格的安全檢查。
5.crystal n.水晶;結晶體
I lost my crystal necklace at the party.
我在晚會上丟失了水晶項鏈。