重点词汇 Key word:
双
<形容词 adj.> two; both; double
E.g. Hézuò duì shuāngfāng yǒulì.
合作对双方有利。
Cooperation benefits both sides.
<量词 measure word> pair
E.g. Měi gè xīn xuénián wǒ dōu yào mǎi yīshuāng xīn xié.
每个新学年我都要买一双新鞋。
I always like to buy a new pair of shoes before starting a new school year.