ｄｒｏｐ有 投、扔，停止，放弃，减少，掉落等意思
其反义词即为上升、增加、继续、坚持等等
其反义词有：go up、rise、ascend、raise、mount、move up、growing、enhance等等
举例说明
①move up上升
Why: If you want to advance in your profession, you’ll eventually have to do the job that your boss is doing, even if only for a brief period of time in order to move up.
原因：如果你想职业生涯的提升，你肯定要做你上司相同的工作，尽管有时可能仅仅是上升路上的一小段时间。
②growing 增加
Finally, the growing population was probably fed by increasing the number and size of irrigated fields.
最后持续增加的人口很可能是通过不断扩大灌溉土地的面积和规模而得到食物供应的。
