It is nothing for a big, strong schoolboy to elbow an elderly woman aside in the dash for the last remaining seat on the tube or bus, much less stand up and offer his seat to her, as he ought.
在地铁或公共汽车上，一个身强力壮的男学生在冲向最后一个座位时，用胳膊肘把老妇人推到一边，这算不了什么，更不用说他本应站起来给她让座了。
A cylinder (Fig. 1) is a hollow tube with a closed concave base that permits the cylinder to stand upright.
钢瓶(图1)是中空的管道，封闭的底部是凹入的，这样可以直立起来。
A cylinder is a hollow tube with a closed concave base that permits it to stand upright.
钢瓶是中空的管道，封闭的底部是凹入的，这样可以直立起来。
When you stand astride a bike - you'll want plenty of room between yourself and the top tube.
当你站在骑自行车-你需要足够的空间和自己的上管。
To with-stand the heat generated at the same time, the tube is made of quartz and filled with halogen (bromide or iodine) and inert gases.
为了抵受同时产生的热力，灯管用石英造成内置卤素(溴或碘)和惰性气体。
For intravascular laser irradiation on blood (ILIB), we design a kind of intravenous laser-inject needle composed of fiber-duct, duct stand, flexible tube and laser coupling head.
为研制用于激光血管内照射治疗的一次性静脉导光针。我们设计了由导光光纤、针管、针管座、软管和耦合头组成的的导光针。
For intravascular laser irradiation on blood (ILIB), we design a kind of intravenous laser-inject needle composed of fiber-duct, duct stand, flexible tube and laser coupling head.
为研制用于激光血管内照射治疗的一次性静脉导光针。我们设计了由导光光纤、针管、针管座、软管和耦合头组成的的导光针。
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