箭头指向卫生间。An arrow pointed to the toilets.箭头射入他的肩膀。The arrow pierced his shoulder.用箭头键把文件目录滚动一遍。Use the arrow keys to scroll through the list of files....
The middle button of his uniform jacket was strained over his belly.制服上装中间的纽扣在他的肚子上绷得紧紧的。Smiling for the cameras, the two men strained to make small- talk.两名男士微笑着面对镜头，东拉西扯着。His voice had lost its resonance; it was tense ...
The infra - red spectra of quinones present a number of interesting features.醌类的红外光谱具有一些有趣的性质.Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.乙烯和反式二氯乙烯在红外光谱的这个区域都无活性.Infra - red ...