Pallidin
梅毒螺旋體素, 蒼白密旋體素
??? 情景例句
I wasn't good at it, and I didn't like studying it.
我不精于此道， 也不愛去學它。
Thank you for you cooperation.
謝謝你們的合作。
Needless to say, the bigger the risk an insurance company takes, the higher the premium you will have to pay.
不用說，保險公司承擔風險越大，你付的保險費也就越高。