The teacher asked us to buy a pair of compasses.老师要求我们买圆规.I am calibrating radio direction finder or adjusting compasses.我正在校准无线电测向仪或校正指南针.With straightedge and compasses, divide a segment of a into 2 parts.用直尺和圆规把线段a分成两...
Unless we're all a lot more careful, the people who have died so far will be just the tip of the iceberg.除非我们都加倍小心，否则死者的人数会比现在多得多。In 1981, five members of a climbing party died while scaling Mount Hood.1981 年，一支登山队的...
对于业余博物学者来说，在一片空地上或被炸后的废墟里可能发现种类繁多的植物群和动物群。A vacant lot or a bombsite can, to the amateur naturalist, produce an extraordinary variety of flora and fauna.通过观察某些现存的动物群和植物群,我们就能更清楚地了解这种困难了.We shall appreciate this difficult...
Different balls quantity determine the max. height for Ball Joint Handrails.球接栏杆不同的球数确定了栏杆的最大高度.PP handrails beautiful style, variety complete, is your ideal choice.PP扶手款式优美, 品种齐全, 是您的理想选择.The handrails must be installed...