英语词汇optional expansion怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	optional expansion
释义	optional — 可选的 adj • 任择 adj • 选配 adj • 选购 adj • 自选 expansion n — 扩大 n • 拓展 n • 扩充 n • 扩产 n • 扩建 n option n — 方案 n • 选择 n • 选择权 n • 选修课 n • 购买权 n • 可选择的事物 n option — 选择 • 期权 expand — 增 • 拓 • 拓展 • 发展 • 扩充 • 膨胀 • 壮大 • 使膨胀 • 菶 • 挓 expand v — 展开 v
随便看	provides money for provides monthly reports provide smooth operation provides more provides more clarification provides more detail provides more detail about provides more effective provides more evidence provides more flexibility provides more insight provides more performance provides more safety provides more valuable provides most of the provides motivation provides much guidance provides much needed protection provide snapshot of provides native support provides new evidence provides new insights provides new levels provides new market opportunities provides new opportunities

英汉双解词典包含2273206条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

optional —