1. put one's life on the line 冒着生命危险
It's important to honor the men and women in the military who put their lives on the line every day defending our country.
尊重军人是很重要的，因为他们每天都要冒着生命危险保卫我们的祖国k[d4p0AVgD,Lkh6HK。

2. ground to a halt 陷入停滞
But since the collapse of the bank that led the funding, construction has almost ground to a halt.
但自从主持为其融资的银行的崩溃，建造工作已基本陷入了停滞F6K^EBrj9cA@&US.Y。

3. bide one's time 等待时机
The cat sat in front of the mousehole, biding its time.
那只猫就坐在那个老鼠洞的洞口等待着时机9eSpSR]+(|AzS|Ei@.U0。

4. step down 卸任；辞职
He would step down as CEO if he felt he could no longer do the job to his high standards.
如果他觉得自己无法在工作中达到他那些高标准的时候，他就会卸任苹果CEO一职@mTL9uj89hgn。