roll up one's sleeves
准备战斗，准备大干;
例句:
1.
To give up one's habits, to break free of the arcs, is to trade in one's expertise.
为了放弃一个人的习惯，打破弧形运动轨迹的自由存在，就是换取一个人新的专长。
2.
So how is it no one's picked up on this before us?
之前怎么没有给我们提个醒呢?
roll up one's sleeves
准备战斗，准备大干;
例句:
1.
To give up one's habits, to break free of the arcs, is to trade in one's expertise.
为了放弃一个人的习惯，打破弧形运动轨迹的自由存在，就是换取一个人新的专长。
2.
So how is it no one's picked up on this before us?
之前怎么没有给我们提个醒呢?