smiled in response
笑了笑作为回应
I had to smile in response, his grin was so impish.我不得不以笑容回应。
To the camera, the Tramp beams a warm smile in response to the amusement he has provided.流浪汉则是以对摄影机露出一个热情的笑容，来回应他所提供的这段馀兴节目。

apologize for
为 ... 而道歉
I must apologize for my discourtesy in arriving late.
我要为迟到失礼而道歉。
How else can I apologize for her?
我还能有别的方法可以向她道歉吗？

irrational
n.无理数
adj.无理性的；不合理的
But it would never occur to anyone to call their method planless and irrational.
但谁都不会想到称他们的方法是无计划无理性的。
Disregarding our zealous interest on the product, we discovered something which was considered irrational and unacceptable by us.
在产品上不理我们的热心的兴趣，我们发现被考虑被我们无理性的和不能接受的某物。

grim tone
冷酷的语气
Swimming is the best way to tone up your body.游泳是健体强身的最好方法。
I admire him for his grim courage.我佩服他的坚韧不拔的勇气。
His peremptory tone of voice irritated everybody.他那专横的口气激怒了大家。

pulled him off you
把他从你身上拖开

A flash of painful images
痛苦的画面一闪而过