Xi
n. 希腊字母的第14个字母；粒子（等于xi particle）
🗣️ 情景例句
The only thing holding us back is our financial situation.
只是财政状况未许可，所以才拖延到现在。
Come in, please.
请进。
It looked as if there would be an exciting race across the Channel.
看来会有一场激烈的飞越英吉利海峡的竞争。