雅思词组1:at all times总是，始终，随时
Locking doors at all times...men didn'tthink it was quite as important as women, but both gave it a high safetyrating.
近义词组：all the time
雅思词组2:at any time在任何时候
You're supposed to ask for a home visitbefore 10:30 in the morning, but obviously, if it's an emergency, you can phoneat any time, night or day.
近义词组：at all hours
雅思词组3:at least 至少
At least, we've done the oralpresentation-I thought that was good, the way I got my feedback really quickly.
She may receive little education, but atleast she is reliable.
The interesting side of sports physiology,at least in my view, is the side that looks at the micro level, looking atcellular change. The researchers are doing cellular research, looking atchanges in body cells when the body is under stress.
近义词组：no less than
雅思词组4:at one's service 愿为某人服务
I'm glad to be at your service, Sir.
We know from modern farming that if theIevel of breeding stock falls below about three hundred females, the future ofthe species locally is at risk.
近义词组：at stake, in danger
雅思词组6:at some stage 在某些时候;在某阶段
I want to ask where the staff room is incase I need to find a teacher at some stage
雅思词组7:at the end of在…的尽头;…结束之时
You've chosen to visit the rainforest inMarch, which is just at the end of the wet season, so you'll soon notice howwell the waterfalls are running and also how damp the ground is.
You will notice at the end of each corridorthat there is another door but these are fire doors and are kept locked fromthe outside.
雅思词组8:at the expense of以…为代价
The rapid urbanization in this country isoccurring at the expense of both rural lifestyles and precious culturalheritage.
近义词组：at the cost of
雅思词组9:at the moment当下，目前
At the moment, your task is to get over thedifficulties and start afresh again.
雅思词组10:at the outset开端，开始
Your tutors will tell you at the outset howto set out the chapters they require but you will need to ask them how theywould like you to organise the bibliography because it varies depending on yoursubject area.
近义词组：at the beginning