1. at the moment 此刻,目前
（1）Robotics seems to be a sexy subject at the moment. 机器人学眼下似乎是时髦的学科。
（2）The police arrived right at the moment of the explosion. 警察就在爆炸的那个时候赶到了。
2. at this rate 照此速度，这样地活
（1）We'll never finish if we go on at this rate. 以这样的速度,我们永远也完不成。
（2）At this rate, he would one day become an empty hulk.
3. at times 有时,间或
（1）He can be a very tiresome child at times. 他有时候会是一个非常讨厌的孩子。
（2）These two aims are not always mutually complementary: at times they conflict. 这两个目标不总是互补的: 有时它们相互抵触。
4. aware of 意识到
（1）I am actually aware of the difficulties we face. 我十分清楚我们面临的困难。
（2）He doesn't seem to be aware of the problems. 他好像没有意识到这个问题。
5. back and forth 来回地,反复地
（1）The wind moved the trees gently back and forth. 风吹得树轻轻地来回摇晃。
（2）He swam back and forth five times up and down the swimming pool. 他在游泳池里游了5个来回。
（1）They booked in at the moment they arrived at the office.
（2）'We'll never get ashore at this rate,'said I.
（3）A system of beliefs can bring you reassurance at times of stress.
（4）All the while I was acutely aware of her nearness.
（5）We must keep an eye open for the stranger who is looking back and forth all the time.