loose end

基本解釋

Also, at the same time, with his right hand, he caught up the loose twine-end of a small bobbin.
與此同時，他用右手捏住小線軸上松了的線頭。
The original cigarette-end detector for loose-end and filter-missing detection negatively affected cigarette surface, and usually had higher misrejecting rate.
原松頭缺嘴檢測器對于煙支外表面有一定的影響，且煙支誤剔除率較高。
You have one little loose end -- hooking cursor events -- to finish up in the object constructor, then the rest of this article is devoted to filling out the object prototype.
還需要加上最后一點兒東西就可以完成對象構造方法 —— 連接鼠標事件，然后本文的其余部分將致力于填充對象原型。

Office parties—the year-end chance to relax with co-workers and let a little loose with the higher-ups you normally tip-toe around.
FORBES: True Stories From The Holiday Party Files
Update the roof: repair loose shingles and if your abode sits in a hurricane-vulnerable locale, consider adding gable end braces.
FORBES: As 'Frankenstorm' Threatens, Last-Minute Ways To Disaster-Proof Your Home
For all the fuss made about the end to quantitative easing, Japan's monetary policy is still super-loose, and will remain so for a good while.
ECONOMIST: Twitchy foreign hedge funds have sold too soon

A loose end is part of a story, situation, or crime that has not yet been explained.
If you are at loose ends, you are bored because you do not have anything to do and cannot think of anything that you want to do.