弄清楚
assure 深信不疑地对··说,向··保证 assure oneself 弄清楚 I assured myself that the bridge was safe before crossing it 我弄清楚那坐桥确实安全才通过 ..
查明
... assure vt. 保证;担保;使确信;弄清楚 assure oneself 弄清楚,查明 assure of vt. 向...保证);查明(使相信 ...
确实弄清楚
... assure v. 保证,确告,担保 assure oneself 确实弄清楚,确保 assure... of 向...保证一定...,肯定地向...说 ...