en masse
(French 法) in a mass or crowd; all together 成群; 全体; 一齐; 一起
Individually the children are delightful; en masse they can be unbearable. 孩子们单独时还讨人喜欢, 一多了就受不了了.
The Joneses are coming for lunch en masse all twelve of them! 琼斯一大家子人都来吃午饭--一共十二口人!
We are thinking of placing an order for your Flying Pigeon Brand bicycles. We would be very grateful if you could make us an offer for 200 ones with details.