you know if you've got somebody coming in and asking you a lot of questions, you're not going to be able to express yourself, perhaps as well as you might.
mi wyddoch os oes gennych rywun yn dod i mewn ac yn gofyn llawer o gwestiynau i chi ni fyddwch yn debygol o allu mynegi eich hun gystal ag y gallech fel arfer, efallai.