Contact and repellency activities of ethanol extracts from twenty medicinal plants against Rhizopertha dominica ( Fab . ) ( Coleoptera: Bostrichidae )20种药用植物乙醇提取物对谷蠹的触杀和驱避活性 ( 英文 )...
On the doorstep he felt in his hip pocket for the latchkey.他站在门口的台阶上,摸了摸后裤兜,找大门钥匙.Someone was opening the front door with a latchkey.有人在用门锁钥匙开前门.At nine o'clock I heard my uncle's latchkey in the hall door.九点钟时...