Up a gum tree
进退维谷
🧩 词语组成解析
up
[ʌp]
adv. 在上面，在高处;起床，起来;向上;由低到高;
adj. 向上的;上升的;竖立的，垂直的;举起的;
vt.& vi. 增加;加速;提高;举起，拿起;
prep. 在…的上端;向高处;沿…而去;向…上游;
n. 上升，升高;兴旺，繁荣;上坡;（价格等）上涨;
gum
[ɡʌm]
n. 口香糖;树胶;黏胶;牙龈;
vt.& vi. 胶合;涂以树胶;使…有粘性;
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
Make sure everybody is at that meeting.
要确定每一位都出席这次会议。
Do you usually play baseball on the weekend?
你通常在周末打棒球吗？
Though these large machines still exist, many of their functions have been taken over by small powerful personal computers, commonly known as PCs.
虽然这种大计算机仍然存在，但它们的许多功能已被体积小但功能齐全的个人电脑——即我们常说的PC机——所代替了。