When not in use, the fins are tucked into special grooves or depressions so that they lie flush with the body and do not break up its smooth contours.
当鱼不使用鱼鳍时，会将它们折叠起来，收回到特殊的沟槽或者凹陷部位；这样鱼鳍就可以与身体保持齐平，以维持它们平滑的外形。
Unplug laptop, desktop and cell phone power cords when not in use.
在不使用笔记本、台式机和手机时，把电源线拔掉。
On most models, the screen folds up and out of your way when not in use.
这样不看电视的时候，大多数型号柜底式电视机的屏幕可以折叠起来不碍事。
When not in use, doors should be locked to avoid unauthorized access.
在不使用时，应锁好车门，以避免未经授权的访问。
When the long period of time when not in use, we need to clean them regularly.
当长时间不使用时，我们还要定期地对其进行清洁。
When not in use, TownScape USB Anti-Virus 2013 minimizes to the system tray area.
当不使用时，市容us B反病毒2013最小化到系统托盘区。
Valve protection caps should be installed on cylinders at all times when not in use.
只要没有使用钢瓶，阀门保护帽要一直装在钢瓶上。
The ball also ACTS as a cover to keep the ink supply from drying out when not in use.
这颗球也是一个盖子，防止管中的墨水在不用时会干掉。
The Courier closes up when not in use, and opens like a book to reveal facing screens.
该信使关闭了在不使用时，像一本书透露面对屏幕上打开。
The directory is not special, just a convenient place to hide link files when not in use.
这个目录并不特殊，只是一个用来方便存放不用的链接文件的地方。
Floor pantries will be locked when not in use. The door should be kept shut at all times.
在不使用时，工作间的门要上锁。所有时间门要保持关闭。
Turn off the lights in a room where you are not (turn off the water when not in use, etc.).
当你不在房间的时候，把灯关掉。(诸如此类，不用水的时候将水龙头关掉。)
This type of structure is also used in the seats so that they can be compacted when not in use.
这种类型的结构，也可以使用的席位，以便他们能够压缩在不使用时。
Store tools in their bag and the hose on its support to avoid possible breakage when not in use.
不使用吸尘附件时保存他在工具袋中，避免不使用情况下的损坏。
To avoid freeze damage to the test kit, it should be stored in a dry, warm area when not in use .
为了避免冰冻对于检测组件的破坏，在闲置时，应该把检测组件存放在干燥、温暖的地方。
This desk is hinged at one corner so it swings into the wall of built-in cabinets when not in use.
这个桌子是挂在一个角落上，所以当它不用的时候就可以把它合起来放进内置的壁橱中。
When not in use, the backpack straps conveniently hide away in their back pocket keeping a clean look.
当不适用时，背包带可以方便地收入背部的口袋里，以保持简洁的外观。
The rooftop of it, is used as expansion of the social sector and also to save two cars when not in use.
屋顶用作社交区的扩展区域，不用时也能存放两辆小车。
Caution: to avoid freeze damage to the test kit, it should be stored in a dry, warm area when not in use.
警告：为了避免冰冻对于检测组件的破坏，在闲置时，应该把检测组件存放在干燥、温暖的地方。
Encourage children to unplug toys and lights in their rooms and turn off lights throughout the house when not in use.
鼓励孩子在不需要的时候，拔下房间内玩具和灯的插头，并关掉屋子里的灯。
Needs minimum space - Almost invisible when not in use. Leaves the way free - no trip hazard across the opening.
占据的空间最小，当不用的时候几乎看不到它的存在，保持着道路的空旷，以致穿过的时候不会绊倒。
The arms will tuck up out of the way when not in use, making space for their owners to get their own hands dirty.
这双手臂在不用时能收缩起来，毫不碍事，为主人自己做饭留出空间。
Disconnect tools when not in use, before servicing and when changing accessories such as blades, bits and cutters.
闲置期间、使用前和更换刀片、钻头、刀具等配件时，应断开工具的动力连接。
Create a clothes-hanging section in your laundry room with a wall-mounted drying rack that retracts when not in use.
在洗衣间里留一块挂衣服的空间，包括一个可以在不用的时候收缩起来的壁挂式晾衣架。
Turn off the lights in a room where you are not (turn off the water when not in use, etc.). Every 30 seconds matters.
当你不在房间的时候，把灯关掉。(诸如此类，不用水的时候将水龙头关掉。)这样的每一个30秒都不是小事。
Turn off the lights in a room where you are not (turn off the water when not in use, etc.). Every 30 seconds matters.
当你不在房间的时候，把灯关掉。(诸如此类，不用水的时候将水龙头关掉。)这样的每一个30秒都不是小事。
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