先期的英文：
in advance

参考例句：

In the diving competition held before the opening ceremony, Canadian and Australian divers each snatched one gold medal
在开幕式前先期举行的跳水比赛中，加拿大和澳大利亚选手各获一枚金牌。

"And so, when I have traversed the nine sections of the world, I will follow Saint Luao up the Great Purity."
先期汗漫九垓上,愿接卢敖游太清。

advance是什么意思：
v. （使）前进；发展；推进；预付；提出；提前；进展；上涨；被晋升；贷（款）
n. 前进；发展；预付款；增长
adj. 预先的；先行的

Prices are advancing.
各种物价都在上涨。

The advance was sounded.
进军号吹响了。

Petroleum is on the advance.
石油价格正在上涨。

The work is not advancing.
工作没有进展。

an advanced stage of illness; a person of advanced age.
疾病的晚期;年迈的人