(pos:副詞)
<explanation>
yue:喺發生某件事、做某個動作之前
eng:in advance; beforehand; prior
<eg>
yue:事先聲明 (si6 sin1 sing1 ming4)
eng:to declare in advance
<eg>
yue:佢事先通知咗大會佢會嚟。 (keoi5 si6 sin1 tung1 zi1 zo2 daai6 wui2 keoi5 wui5 lai4.)
eng:He notified the organization of his arrival in advance.
