On the doorstep he felt in his hip pocket for the latchkey.他站在门口的台阶上,摸了摸后裤兜,找大门钥匙.Someone was opening the front door with a latchkey.有人在用门锁钥匙开前门.At nine o'clock I heard my uncle's latchkey in the hall door.九点钟时...
The alkylation of isoparaffin with olefin is an important process of petroleum processing.异构烷烃与低分子烯烃的烷基化反应是石油加工的重要过程之一.Recent advances in ring closing metathesis ( RCM ) reaction, including olefin and enyne metathesis re...
Tissue that is removed during the operation is checked for signs of malignancy.检查手术切片，以判断是否为恶性。All that remains is to list the properties characteristic of malignancy.剩下来的问题是要列举一下恶性肿瘤性质的特征.The marked pleomorphism and hyp...