after careful preparation
经过精心准备
以上为机器翻译结果，长、整句建议使用 人工翻译 。
I prefer making a speech after careful preparation.
我更愿意经过准备以后才做发言。
youdao
He prefers making speeches after careful preparation.
他喜欢经认真准备后发言。
After a long and careful preparation, I played the violin with Larry.
经过长时间的精心准备，我和拉里一起演奏了小提琴。
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