If you smell gas fumes or burning, take the car to your mechanic...如果你闻见汽油冒烟或燃烧的异味，应把车送修。He is an adept mechanic.他是个熟练的机械师。He is a garage mechanic.他是一名加油站技工。An elevator mechanic can work the machinery directly by turning...
Taxonomic species are defined on phenetic discontinuities, not on interfertility.分类学上的种是根据表型不连续性而不是根据互交可孕性来确定的.A TAXONOMIC STUDY ON WHITEFLIES IN BEIJING ( HOMOPTERA: ALEYRODIDAE )北京地区粉虱分类研究 ( 同翅目: 粉虱科 )The temptation to...
The unemployed executives include former sales managers, directors and accountants.被解雇的管理人员包括前销售经理、主管和会计。Women are sometimes seen to be less effective as managers.女性有时被认为不善于管理。Some managers have recently raised objection...