阿富汗空军正用直升机向被围城镇提供补给。The Afghan air force was using helicopters to supply the besieged town.这些补给要卸下来装上直升机。The supplies need to be offloaded and put on helicopters.各种补给都不稳定，食品也短缺。Supplies of everything are unreliable, food...
The ability of clay minerals to catalyse decarboxylation has long been recognised.粘土矿物能催化脱羧基作用是早已认识到的问题.The results demonstrate that this catalyse has an excellent activity and selectivity this reaction.结果表明该催化剂对此合成反应具有很...
My son is an apprentice in a furniture maker's workshop.我的儿子在一家家具厂做学徒.We shut off the motor before we left the workshop.我们离开车间以前把马达关掉了.Five young workers have been assigned to our workshop.拨了5名青年工人到我们车间....
Border line heart size and tortuous aorta Lt pleural effusion is found.心脏边缘及主动脉弓处有肋膜积水的情形.Effusion, when present , is slight, and redness and warmth are usually absent.如有渗出液,一般都很轻微.His employer greeted him with an effusi...