Pre-existing
[ [ˌpriˌig'zistiŋ] ]
大学 College
a. 先已存在的, 早已存在的, 业已存在的
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
existing
[ig'zistiŋ]
adj. 目前的;现存的;
v. 存在( exist的现在分词);持续存在;
🗣️ 情景例句
to move the air-conditioning units
移动空调设备
Do you usually play piano during the holidays?
你通常在假日期间弹钢琴吗？
But even the mosquito has been subdued by attention to drainage and by chemical sprays.
然而即使蚊子，也由于我们注意清理污水和喷洒化学药品而被制服了。