1.human speech 人类语言
例句:Birdsong may have more in common with human speech than we realize.
鸟类唱歌和人类的语言之间很可能有我们所意想不到的共同之处.
2.try to 设法
例句:I try to remember all the good times I've had here.
我试着回忆在这里度过的所有美好时光
。3.listen to 听…(讲话)
例句:The students are listening to their teacher in class.
学生们正在课堂上听老师讲课
。4.sit down 坐下
例句:Teachers staged a sit-down protest in front of the president's office.
老师们在校长办公室门前举行了一场静坐抗议
。