时常翻动一下花圃和草坪四周会让被雨水压紧的土壤松动松动。Regular forking of beds and borders relieves the compaction caused by rain.把松动的地板块都粘好。Stick down any loose bits of flooring.用螺钉固定住所有松动的地板。Screw down any loose floorboards....
The heptane compound has a primary purpose as a plasticizer for doublebase propellant systems.化合物庚烷的主要用途是作为双基推进剂的增塑剂.However, it is difficult to produce multi branched i heptane and restrain its cracking.正庚烷异构化的难点在于高选择性地...
You cannot flay the same ox twice.一头牛不能剥两次皮.They had to flay the great, white, fleecy animals and cut them up for food.他们不得不将这些体形庞大、身披绒毛的白色动物剥皮，然后切碎了做食物。They had to flay the fleecy animals and cut them up for food.他们不得不将...