Double-ender
双面锉刀；两头可开的电车
🧩 词语组成解析
double
['dʌbl]
adj. 双的;两倍的;两面派的;双人用的;
vt. 使加倍;把…对折;重复;
vi. 加倍，加倍努力;快步走;
adv. 两倍地;双重地;
n. 两倍;双精度型;
doub二，双+le反复 → 反复两倍 → 翻倍
n. 安德（游戏中的人物名）；恩德（男子名）
🗣️ 情景例句
When you read, read as loudly as possible, as clearly as possible and as quickly as possible.
当你读的时候，要尽量大声、尽量清晰和尽量快速。
Who will accompany you to the airport?
谁将陪你去机场？
Please don't touch the machines.
请不要摸这些机器。