All Windows inside are covered with a blackfilm or laid with bricks. Nobody should know somebody lives here.
所有的窗户都在里面复上了薄膜或挡上了砖。没人知道会有人住在这里。
2
Experiment on poplar seedling cultivation with blackfilm covering demonstrated that it could improve greatly quality of the seedling and reduce the cost.
采用黑膜覆盖进行杨树扦插育苗试验，结果表明，黑膜覆盖能够明显提高苗木质量，显著降低育苗成本。
3
Avoid placing ticks in blackfilm containers or using cellophane tape to mount the tick to paper, a note card or a slide if it needs to be identified or tested.