Natural fabrics like silk and wool are better insulators than synthetics.丝绸和羊毛之类的纯天然织物比合成纤维的保暖性更好。cotton fabrics and synthetics棉织物与合成织物It is a universally applicable thickener for printing on the synthetics.特别适合用做纺织印染工业中...
Yet few world-class rivers anywhere have etched a more enduring impression on as many millions for as many years.然而,世界上很少有这样大的河流会给这样多的人留下这样长时间的令人难忘的印象。...the enduring fundamental principles of life that ennoble mankind.使...
Send your answers on the back of a postcard.将答案写在明信片背面寄出。Print your name and address on a postcard and send it to us.在明信片上用印刷体写上你的名字和地址,然后邮寄给我们。The army sent me a postcard acknowledging my request.军队寄给我一张明信片告知我的申请书已收到。Th...