Cdna
[化] 互补DNA
🗣️ 情景例句
I think I did the right thing
我觉得我做了一件对的事
Necessity is the mother of invention.
穷则变，变则通。
When my husband was going into the dining room this morning, he dropped some coins on the floor.
今天早晨我丈夫走进饭厅时，把一些硬币掉在地上了。