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- Drag the exposure in the past, solvent and film resin acylamide assiociation, deterring effect, makes it hard to dissolve in alkaline solution. 在曝平以后，阻溶剂与成膜树脂酿成氢键缔合，爆发阻溶息用，使得在碱液洋不易凝固。
- It is hard to sleep without a cooler in this room. 没有空气调节器，在这间屋里很难入睡。
- It is suuitable to clean the yellowish greasy stain (usually called" yellow robe") which is hard to dissolve and to clean on mechanical equipment, lathe, punching machine after long time of usage. 适用于工厂的机械设备、机床、冲床、机修等长期使用后形成的难溶黄色油斑（俗称黄袍）。
- Agitate the mixture to dissolve the powder. 搅动混合物而使粉末溶化。
- John felt it hard to rig out his family. 约翰感到难以为一家大小置备衣着。
- She was trying hard to disgorge a fish bone. 她拚命想把鱼刺吐出来。
- The scribe worked hard to support his family. 那个抄写员辛勤工作来养家。
- If the ink sinks in it'll be hard to remove it. 如果墨水渗入，要除去就很困难。
- They worked hard to provide for their large family. 他们努力工作以供养一大家子人。
- He had to work hard to support his family. 他不得不努力工作来养家。
- Agitate water briefly to dissolve detergent. 简要地搅动一下水使洗涤剂溶解。
- It is hard to tell who is who in the parade. 在游行队伍中很难分清谁是谁。
- He has been trying hard to hold onto his temper. 他一直尽力控制自己不发脾气。
- It's hard to get a word out of them. 从他们身上一句话都套不出来。
- To dissolve(food) by means of a proteolytic enzyme. 通过水解酶来溶解（食物）
- He tried hard to make up for the lose time. 他竭力试图弥补损失的时间。
- My sadness slowly began to dissolve. 我的悲哀渐渐开始淡
- Those rebellious teenagers are hard to control. 那些反叛的青少年很难管教。
- To dissolve(food)by means of a proteolytic enzyme. 通过水解酶来溶解(食物)
- He finds it hard to mix at parties. 他感到很难在聚会上与人攀谈。
