帮我用英语解释下这些英语俗语

1。不鸣则已,一鸣惊人 When it rains,it pours describes how after there has been no rain for a long time,it suddenly rains a lot all at once。Besides,it means when something good or bad occurs,it usually occurs more than once and often within a short period of time。2。门门精通,样样稀松 "Jack of all trades,master of none" is a figure of speech used in reference to a person who is competent with many skills but is not outstanding in any one。3。生活起伏不定 life is full of major and minor crises -- the ups and downs of health,success and failure in career,marriage,and divorce -- and all kinds of characters。4。三思而后行 We should know what we are getting into before we commit ourselves。5。不要吹毛求疵 The proverb refers to the practice of evaluating the age of a horse by looking at its teeth。This practice is also the source of the expression “long in the tooth,” meaning old。6。良机勿失 Take advantage of favorable circumstances; they may not last。7。集腋成裘 Take care of the pence,and the pounds will take care of themselves。8。以其友知其人 Our character is reflected in our choice of friends。A man may usually be known by the Books he reads as well as by the company he keeps; for there is a companionship of Books as well as of men; and one should always live in the Best company,whether it be of Books or of men。9。需要是发明的动力 A need or problem encourages creative efforts to meet the need or solve the problem。This quote means that without ever having to need anything,nothing would have been invented。Without necessity,the need for new inventions,such as the fire or even the television,may have never been found or even thought of。Also,with the need of certain things,you can help improve your life and the lives of others。10。一分耕耘,一分收获The saying “No pains,no gains” is almost universally accepted because of the plain yet philosophical moral it teaches:if one wants to achieve something,he has to work harder and tolerate more than others。The saying is true of any pursuit man seeks。Whatever one wishes to accomplish,he has to exert himself to forge ahead,for nobody can expect anything for nothing。