Lactoserum
抗乳血清
🗣️ 情景例句
He's been here for years, he should know the ins and outs of the job by now.
他在这里已经好多年，现在理应熟悉各方面的工作了。
One never loses by doing a good turn.
行善者决无一失。
When he was driving along Catford Street recently,
最近，当他正开车在凯特福德街上行驶时，