🧩 词语组成解析
pin
[pin]
n. 钉;别针，扣针，饰针;大头针;没价值的东西;
vt. 压住;（用钉等）钉住，钉住，别住，扣住;用障壁等)围住，关住（俚语）抓住;[军]牵制;
adj. 针的;钉的;销的;大头针的;
tailed
[[teild]]
a. 有...尾的, 去掉尾的, 有...状尾的\\n[计] 尾部, 尾标, 结束符
duck
[dʌk]
n. 鸭子，野鸭;鸭肉;（表示友好的称呼）乖乖;（板球）零分;
vt.& vi. 躲避，回避;潜入;忽然低下头（或弯下腰）;迅速行进;
🗣️ 情景例句
Can you hand me that ... please?
你能给我递过来……吗？
I doubt it.
我表示怀疑。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。