All I could hear was the steady clacking of a solitary typewriter.我所能听到的一切是一部孤零零的打字机不断发出的噼啪声.She heard his footsteps clacking along the concrete pavement.她听到他的脚步声啪嗒啪嗒地沿水泥人行道走去.Stop clacking your pencils!别弄得铅笔噼啪乱响!...
It is antagonistic abscisic acid in abscission.在脱落过程中生长素与脱落酸有拮抗作用。Abscission of the tightly rolled , needlelike tips of the injured leaves quite often occurred.受毒害叶片经常出现针状的叶尖从蜷缩部分脱落下来.Objective : To introduce a way of ep...
Ink particles attach themselves to air bubbles and rise to the surface.墨汁颗粒附着在气泡上，浮到表面上。She dipped a quill in ink, then began to write.她将羽毛笔在墨水里蘸了一下，随后开始书写。The ink had run on the wet paper.墨迹在湿纸上浸开了。...