Do not wait for good things to happen to you. You need to walk towards happiness.不要等待好事降临，你要向幸福进发。If you happen to talk to him, have him call me.如果你碰巧能和他说话，让他给我打个电话。Do drop in if you happen to be passing!如果你碰巧经过时进来坐坐....

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happen to的音标：happen to的英式发音音标为：['hæpən tu:]happen to的美式发音音标为：['hæpən tu]...