Ocdna
[化] 开环DNA
🗣️ 情景例句
About Mom and Dad.
爸爸和妈妈。
I ought to stay at home.
我应该留在家中。
You see, the school will be expensive to run and we shall need a lot of good teachers.
你知道，办这所学校要花很多的钱，我们需要很多好教师。