幼苗必须很好地保护以免受冻。
手臂和脚或使用吊带或用较厚的包扎，要进行保护以免受伤。
The arm or foot should be protected from harm with either a sling in the case of the arm or a bulky dressing in the case of the foot.
所谓温室就是玻璃建筑，里面培植一些需要保护以免受坏天气侵袭的植物。
A greenhouse is a glass building in which you grow plants that need to be protected from bad weather.
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