除非减肥是为了悦已，否则很难保持积极性。
《柯林斯高阶英汉双解学习词典》
Constant injury problems had made it tough for him to hold down a regular first team place.
持续伤病使得他很难保住在球队的常规主力位置。
《柯林斯高阶英汉双解学习词典》
Someone had to defuse the time bomb or all on board the ship be killed.
有人得去把定时炸弹的雷管拆掉,否则全船人的性命难保.
网络文摘精选
Politics is more fragmentary , too, thanks to Scottish, Welsh and Northern Irish devolution.
由于苏格兰 、 威尔士和北爱尔兰的政权更替,政见也是越来越难保持一致.
网络文摘精选
It's always hard for me to maintain a balance between calorie intake and expenditure.
很难保持卡路里摄入和消耗的平衡.
网络文摘精选
A newfound comet is heading towards the sun. It will likely not survive.
一颗新近被发现的彗星正一门心思地向太阳冲去, 可能小命难保.
网络文摘精选
The current approach relies on backward compatibility, which is often difficult to guarantee.
目前的办法依赖于向后兼容, 而这通常很难保证.
网络文摘精选
Much of today's printed material will not survive to be available for future generations.
许多今天的印刷资料很难保存下来为后人所用.
词典精选例句
In hot weather it is rather difficult to preserve food and keep it fresh and safe to eat.
热天很难保藏食品，使之保持新鲜与食用安全。
互联网摘选
It is difficult to make sure that the quality remains up without increasing the price.
很难保证做到保持高质量而不提高价格.
《简明英汉词典》
