他们交往大概有一年了。They were knocking around together for about a year.因为不怎么懂意大利语，她很少和人交往。Since she knows little Italian, she keeps to herself.他们决定正式交往。They decided to put their relationship on a more formal footing....
There is hysteresis between the sorption and desorption curves.吸湿与脱湿曲线间有一定的滞后现象.One may also adjust the conditions to monitor the desorption of adsorbate from the catalyst.也可以调节条件以检测催化剂上吸附质的解吸.These composite resins have...
他突然患了严重的痢疾.He was seized with a violent attack of dysentery.他患痢疾已经三天了.He has been attacked with dysentery for three days.得了痢疾忌讳吃生冷油腻食物.People suffering from dysentery must avoid raw , cold or greasy food....