查询词典 have trouble doing sth.

be sure of sth./sb：确信某事/某人

177、be sure to do sth.确信干某事 | be sure of sth./sb.确信某事/某人 | 178、play a joke on sb. 开某人的玩笑

be sure of sth.: certain to receive, win, etc. sth：确信会获得,赢得

A crowd was driven off. 一群人被赶跑了. | 4. be sure of sth.: certain to receive, win, etc. sth. 确信会获得,赢得 | You may always be sure of a welcome at my house. 欢迎你随时来我家.

be certain of sth=be sure of sth：确信某事

29.be certain to do sth=be sure to do sth确信去做某事 | 30.be certain of sth=be sure of sth确信某事 | 31.be certain that从句=be sure that从句

be sure to do sth：有信心做某事

94.suffer from sth 遭受......痛苦 | 95.be sure to do sth 有信心做某事 | eg.She is sure to win the first prize in the competition./她有信心在比赛中获胜.

be sure to do sth：一定要做某事

970. support sb. to do sth. 支持某人做某事 | 971. be sure to do sth. 一定要做某事 | 972. make sure 务必, 务请

be sure (not) to do sth：一定不做某事

79.be sure to do sth 一定去做某事 | 80.be sure not to do sth 一定不做某事 | 81.a two-week camp 一个两周的野营活动

be surprised at sth：因为某事而吃惊

38 做某事很吃惊 be surprised to do sth | 因为某事而吃惊 be surprised at sth. | 39 打电话向某人求救 call sb. for help

be surprised at sth：对某事惊讶

be astonished at sth 对某事惊讶 | be surprised at sth 对某事惊讶 | run away 逃跑

be surprised at / about sth：对某事感到惊奇

be surprised to do sth 惊奇地做某事 | be surprised at / about sth 对某事感到惊奇 | put out 扑灭

be thirsty for sth：如饥似渴

nod one'd head 点头 | be thirsty for sth 如饥似渴 | be hungry for sth 如饥似渴

longitudinal induced voltage：纵向感应电压

longitudinal impedance 纵向阻抗 | longitudinal induced voltage 纵向感应电压 | longitudinal magnetic field 纵向磁场

refrigerant circuit：冷凍迴路

冷冻剂 refrigerant | 冷冻回路 refrigerant circuit0 | 冷冻活性碳床 refrigerated charcoal bed