trepidation

1. N-UNCOUNT Trepidation is fear or anxiety about something that you are going to do or experience. 驚恐; 焦慮[正式]

It was with some trepidation that I viewed the prospect of cycling across Uganda. 想到要騎自行車穿越烏乾達(dá)，我感到有點(diǎn)驚恐不安。