It was made of soft lumber, spruce by the look of it.其制作材料是软木，看起来像是云杉。The truck was sent to carry lumber.卡车被派出去运木材.Forested areas have been expanding every year, with the increase in standing timber greater than that of ...
These patients may also benefit froma volatile anesthetic such as isoflurane that effectively bronchodilator the airways.这些病人也可能使用吸入性麻醉剂,异氟烷可以有效的扩张气道....