Cdna
[化] 互补DNA
🗣️ 情景例句
Are you sure you are dialing the right number?
你确定你打的号码是对的吗？
A policeman pricks up his ears.
一个警察竖起耳朵在认真地听着。
Robert was delighted to see me and equally pleased with my little gift.
罗伯特见到我很高兴，对我的薄礼也感到满意。