weak at信息详情
弱于
peck at───啄；少量地吃
weakest───adj.最弱的
wink at───假装没看见；使眼色
weak acid───[化学]弱酸
weak spot───弱点
weak safety───安全性差
wear out───磨损，耗尽；穿破；使精疲力竭
I know I am weak at promoting myself.───我知道，在自我推销方面自己很弱。
His sudden smile made her go weak at the knees.───他突然笑了笑，使得她两膝发软。
If the word has become weak at conveying big corporate messages, it has become even weaker at conveying small ones.───如果文字在传递大型公司信息上变得无力，那在传递小型公司时就更无力了。
Think of her sweet smile, remember she had a good, boy weak at the sky, tears flowing drop by drop.───想起女儿甜美的笑容，忆起她曾经的好，男孩儿无力的望着天空，眼泪一滴一滴流着。
and a president who is weak at home tends to be perceived as weak abroad as well.───并且一个在国内很软弱的总统在国外往往也会被认为不够强势。
The researches at home and abroad on interpersonal self, however, appear to be quite weak at present.───但目前国内外对人际自我的研究还显得十分薄弱。
Across the ages, one in five women questioned said that they were after a man who makes them weak at the knees.───不论年龄差别，都有五分之一的受访妇女说她们追求能使她们腿发软的男性。
Armed with a bow, a sword, shield and light armour, Norse arches are weak at shooting, but can stand their ground in melee.───北欧弓箭兵装备单体弓、长剑、盾牌和轻甲，远程杀伤较弱，但近身搏杀却颇为出色。
Is the pound strong or weak at the moment?
His sudden smile made her go weak at the knees.
His smile made her go weak at the knees .
He was always weak at/in languages but strong at/in science.
John is good at French but weak at history.
Her knees went weak at the sight of him.
Her school report shows that she is weak at/in arithmetic and biology.
The shock made me go all weak at the knees.
She's rather weak at maths.