Photofluorimeter
熒光計
??? 情景例句
I type about 40 words per minute.
一分鐘我能打40個字。
If he doesn't wake him, I will.
如果他不，我將叫醒他。
always respects a parent who admits that he is wrong,
他們總是尊敬的，對于能夠承認錯誤或無知、